The complete guide to the best affordable mattresses in the USA — ranked by expert testing, with prices, health guidance for back pain and spine conditions, and direct contact information for every brand.
The average queen mattress costs $1,000–$2,000, yet independent testing organizations including SleepFoundation.org and NapLab.com have found high-quality options available for $500 or less. The National Council on Aging (NCOA) reported in its March 2025 Pain and Position Sleep Survey that 70% of respondents experienced better sleep quality after purchasing a new mattress. The NIH National Library of Medicine confirms that medium-firm mattresses provide the best support for reducing pain and maintaining proper spinal alignment — the same standard independently tested experts recommend across back pain, ankylosing spondylitis, and scoliosis guidance. Mattress foam prices dropped 8–12% between 2024 and 2026 as supply chains normalized, meaning quality affordable options are now more accessible than at any point in recent years.
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What is the cheapest but best mattress? Zinus Green Tea or Linenspa Hybrid (~$200–$350 queen) for budget; DreamCloud Hybrid ($649–$699) for best valueFor under $300: the Zinus Green Tea Memory Foam (available at Amazon and Walmart) and Linenspa Memory Foam Hybrid consistently lead budget comparisons with CertiPUR-US certified foam and 10-year warranties. NapLab.com’s testing found that quality drops off significantly below $400 for queen mattresses — at which point materials and durability both suffer. For the true best value — high quality at low price — NapLab rated the Vaya all-foam ($699 queen, score 8.80/10) as the top 37% of all 360+ mattresses they have tested, at 52% below average price. DreamCloud Hybrid ($649–$699 queen) scored 8.66/10 and was specifically named Best for Back Pain Sufferers by CNN Underscored’s February 2026 testing. The $500–$700 range consistently provides the best value across independent testing organizations.
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Which is the best budget mattress? Allswell Hybrid (king $397, queen ~$299) — best budget for couples; Linenspa Hybrid (queen ~$200) — absolute lowestMattressNerd.com called the Allswell Hybrid king at $397 “a steal” — the most affordable king-size mattress tested, making it the top recommendation for couples on a budget. The Allswell is available at Walmart and features good motion isolation, lumbar support, and the hybrid coil+foam construction that usually costs $800+. For the absolute lowest price with a meaningful quality level, the Linenspa Memory Foam Hybrid typically sells under $200 for a queen with a 10-year warranty and 100-day return policy at Amazon. Tom’s Guide compared Linenspa vs Allswell specifically and rated both “the best cheap mattresses, coming well under $500 for a queen even at full retail price.” Above $400, quality improves significantly — the Brooklyn Bedding Signature and Bear Original consistently lead the $500–$700 range for budget-conscious buyers who want a true quality upgrade.
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What is the best affordable mattress for queen size? Nectar Classic Memory Foam (~$649 queen); DreamCloud Hybrid (~$699); Brooklyn Bedding Signature (~$665)For queen size specifically, three mattresses dominate independent testing in the affordable category. Nectar Classic Memory Foam (approximately $649 queen with frequent sales) provides excellent shoulder and hip pressure relief, strong motion isolation making it ideal for couples, and a 365-night trial. DreamCloud Hybrid (approximately $649–$799 queen) outperforms Nectar for back sleepers and combination sleepers who change positions — its coil base provides better support at weight extremes and keeps the sleeping surface cooler. Brooklyn Bedding Signature Hybrid ($665 queen) earns 4.7/5 stars and is widely praised for pain relief in customer reviews. All three include free shipping, extended trial periods (100–365 nights), and warranties of 10 years or more. MattressClarity.com’s March 2026 testing specifically rates the Brooklyn Bedding Signature as ideal for back and side sleepers under 230 lbs.
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What is the best affordable mattress for king size? Allswell Hybrid king at $397 (Walmart) — the most affordable king tested; DreamCloud king ~$799King-size mattresses cost proportionally more than queen sizes, but the Allswell Hybrid at $397 for a king is consistently called out as exceptional value — MattressNerd.com declared: “Readers, this is a steal.” It provides good motion isolation (important for couples), lumbar support for back sleepers, and the quality construction of a hybrid at a price most all-foam budget mattresses charge for a queen. For buyers who want a premium king with features like cooling, zoned support, and a longer trial period, DreamCloud’s king-size typically runs $799–$899 with frequent promotions and includes a 365-night sleep trial and forever warranty. Bear Hybrid and Brooklyn Bedding Signature are both recommended by MattressNut.com as best hybrid value under $1,000 in king sizes. All available online with free shipping and in-home trial periods.
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What is the best affordable mattress for back pain? Medium-firm hybrid (5–7 firmness scale); DreamCloud best tested; Helix Midnight Luxe best for older adults (NCOA)The NIH National Library of Medicine confirms medium-firm mattresses provide the best support for reducing pain and maintaining spinal alignment. Research cited by DreamSlumber.blog shows medium-firm mattresses reduce chronic low back pain by up to 48% compared to softer alternatives. NCOA.org’s testing with older adults (published April 2026) named the Helix Midnight Luxe with ErgoAlign layer as the clear winner for relieving pressure when lying on the back — it also topped their scoliosis recommendations. CNN Underscored (February 2026) named the DreamCloud Hybrid the best mattress specifically for back pain sufferers. Sleep scientist Dr. Carleara Weiss, PhD (University at Buffalo) confirms: “Medium-firm mattresses are generally considered the best choice for people with back pain.” For affordable back pain relief: DreamCloud ($649–$699), Bear Original ($500–$600), and Amerisleep AS2 (named #1 for back pain by Verywell Health) are the consensus picks.
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What is the best mattress for ankylosing spondylitis (AS)? Medium-firm hybrid (5–7 firmness), zoned lumbar support, cooling features; Amerisleep AS2 or Saatva ClassicApproximately 300,000 Americans have ankylosing spondylitis (AS), a chronic inflammatory condition where spinal inflammation peaks at night and in early morning — making mattress selection a medical decision, not just a comfort one. Per Dr. Jordan Burns, DC, and research published in the NIH National Library of Medicine: medium-firm mattresses (5–7 out of 10 on the firmness scale) provide the best support for AS patients. Three critical features: (1) Zoned support — firmer lumbar zone, softer shoulder zone. (2) Cooling construction — AS inflammation raises local tissue temperature; gel-infused foam disperses heat that would otherwise worsen pain. (3) Ease of repositioning — AS patients shift positions frequently due to pain; a slightly bouncy hybrid that responds in seconds is better than slow-response memory foam. CertiPUR-US certification on foam components confirms durability and chemical safety. Amerisleep AS2 (named #1 back pain mattress by Verywell Health) and Saatva Classic (for its reinforced edges that make getting in and out of bed easier) are the top specialist recommendations.
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What type of mattress is good for scoliosis? Medium-firm hybrid with zoned support and pressure relief at shoulders and hips; Helix Midnight Luxe #1 (NCOA)NCOA.org’s testing with older adults specifically named the Helix Midnight Luxe with optional ErgoAlign layer as the top mattress for scoliosis — because it earns the highest score for relieving back pressure while lying down, a combination of its hybrid construction and the optional ultra-dense foam ErgoAlign layer that provides extra density around the midsection for hip and lower back pressure relief. For scoliosis specifically: the mattress should support natural spinal curves without forcing the spine flat (too firm) or allowing it to sag (too soft). Medium-firm is the consistent clinical recommendation. Zoned support — where the mattress is designed with different firmness levels under different body zones — is particularly valuable for scoliosis because it accommodates asymmetrical spinal loading. Side sleepers with scoliosis benefit from softer shoulder zones to prevent shoulder compression. Back sleepers need firmer lumbar support to maintain curve integrity.
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What is the best affordable mattress for couples? DreamCloud Hybrid (motion isolation + cooling); Allswell king $397 (most affordable); Nectar (memory foam hug)For couples, two features matter most: motion isolation (so one partner’s movement doesn’t wake the other) and temperature regulation (so neither partner overheats). DreamCloud Hybrid leads for couples who need both — its coil construction promotes airflow while the foam layers absorb motion. Mattress Nerd rates it: “The DreamCloud has a good mix of features couples will appreciate.” All-foam mattresses like Nectar Classic ($649 queen) provide superior motion isolation — memory foam absorbs movement almost completely — but may retain more heat. For couples sharing a king on a tight budget, the Allswell Hybrid king at $397 (Walmart) is the consensus best affordable option: good motion isolation, lumbar support for both partners, and the size that allows each person room to sleep without disturbing the other. The DreamCloud 365-night trial and forever warranty are particularly valuable for couples where both people need to confirm comfort before committing.
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What is the best affordable firm mattress? DreamCloud Hybrid (7–7.5/10 firmness); Saatva Classic Luxury Firm; Brooklyn Bedding Signature (medium-firm); Plank FirmFirmness is rated on a 1–10 scale; most people prefer 3–8 depending on sleeping position and weight. “Firm” typically means 7–9 on this scale. Among affordable firm options: DreamCloud Hybrid rates 7–7.5/10 on independent testing — firm without being punishing, with enough foam contouring to prevent pressure buildup. Brooklyn Bedding Signature (medium-firm, about 6.5/10) is praised for its bouncy coil construction that prevents the “stuck” feeling of dense memory foam. For genuine firmness, Tom’s Guide consistently recommends the Plank Firm (Brooklyn Bedding’s firm-side flip model) as the best firm mattress online — it’s ultra-supportive yet comfortable. Saatva Classic Luxury Firm is the premium pick — multiple firmness options, high-density foam, durable coils rated for 10+ years, and white-glove delivery. Important: heavy sleepers (230+ lbs) and stomach sleepers need genuine firmness to keep the spine aligned — never buy based on advertised firmness alone; look for independent firmness test scores.
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What should I look for when buying an affordable mattress online? Trial period (100+ nights), warranty (10+ years), CertiPUR-US certification, return policy, firmness testing scoresWhen buying a mattress online, five things protect you from a poor purchase. (1) Trial period: Never buy without at least a 100-night trial — you need weeks to properly evaluate a mattress. Nectar and DreamCloud both offer 365-night trials. (2) Warranty: Look for 10-year minimum; Nectar and DreamCloud offer lifetime/forever warranties. (3) CertiPUR-US certification: This independent organization verifies that foam meets standards for content, emissions, and durability — it protects against off-gassing and confirms the foam will last. (4) Verified firmness score: Advertised firmness often differs from actual feel — look for independent testing organizations’ firmness ratings, not just the manufacturer’s description. (5) Return policy: Confirm the mattress can actually be returned and what the return process involves. Most reputable brands arrange free donation-based returns rather than requiring you to ship a mattress back. Mattress foam prices dropped 8–12% in 2026 vs 2024, meaning there is no need to rush — the market is stable and sale pricing is consistent year-round.
Sources: SleepFoundation.org Mar 2026 (avg queen $1,000–$2,000; all-foam $700–$1,200; hybrids $1,500–$2,200; firmness 1–10 scale; Bear Original Tencel); NapLab.com Feb 2026 (avg queen all types $1,455; under $400 severe quality drop; best value $500–$700; Vaya $699 score 8.80/10 top 37%; DreamCloud Hybrid $649 score 8.66/10 55% less than avg); NCOA.org Apr 2026 (70% better sleep after new mattress survey; Helix Midnight Luxe ErgoAlign #1 older adults back + scoliosis; DreamCloud 365-night trial forever warranty; Dr. Carleara Weiss PhD SUNY Buffalo medium-firm best back pain); CNN Underscored Feb 2026 (DreamCloud best back pain; Nectar Premier best stomach sleepers; Sleep Number 100-night 15yr warranty); MattressNerd.com Apr 2026 (Allswell king $397 best affordable king “steal”; Linenspa + Allswell best cheap both under $500 queen); MattressNut.com Apr 2026 (40+ brands tested; foam 8–12% cheaper 2026 vs 2024; Nectar 365-night all models; most mattresses 7–10 yr; Bear + Brooklyn best hybrid under $1K); NIH NLM (medium-firm best support reducing pain maintaining alignment); DreamSlumber.blog May 2025 (medium-firm reduces low back pain up to 48% vs softer); EachNight.com Jan 2026 (AS ~300K Americans; reinforced edges easier in/out bed seniors); Dr. Jordan Burns DC ProWellness Chiropractic (medium-firm best AS support); MattressClarity.com Mar 2026 (Brooklyn Bedding Signature best back side sleepers <230 lbs; Saatva Classic back pain chronic)
Sources: NapLab.com Feb 2026 (avg queen all types $1,455; 8–12% price drop 2026 vs 2024); NCOA Mar 2025 survey (70% better sleep new mattress); DreamSlumber.blog (medium-firm 48% less back pain); NIH NLM (medium-firm best alignment); MattressNut.com Apr 2026 (7–10 year lifespan)
Each mattress includes the independent expert rating, current queen price with typical sales, who it is best for, trial period, warranty, and direct contact information. Prices shown reflect April 2026 sale pricing — most brands run consistent promotions year-round. Always verify current pricing on each brand’s website before purchasing.
Sources: NapLab.com Feb 2026 (DreamCloud Hybrid $649 8.66/10 55% below avg; Vaya $699 8.80/10 52% below avg); CNN Underscored Feb 2026 (DreamCloud best back pain; Nectar Premier best stomach sleeper; Sleep Number 100-night 15yr warranty); MattressClarity.com Mar 2026 (Brooklyn Bedding Signature 4.7/5 budget hybrid; Saatva Classic chronic back pain); NCOA.org Apr 2026 (Helix Midnight Luxe #1 back pain + scoliosis older adults; ErgoAlign layer; 70% better sleep); MattressNerd.com Apr 2026 (Allswell king $397 “steal”; Brentwood Home Cypress $499 full; Linenspa + Allswell both under $500); Tom’s Guide (Linenspa vs Allswell both best cheap under $500; Plank Firm best firm); MattressNut.com Apr 2026 (Saatva #1 support+durability; Zinus Green Tea + Nectar best value under $1K; Bear + Brooklyn best hybrid under $1K); SleepFoundation.org Mar 2026 (Bear Original hot sleepers side sleepers 230+; Tencel cover); EachNight.com Jan 2026 (Amerisleep AS2 AS patients; Saatva reinforced edges easier in/out seniors); Amerisleep.com (Bio-Pur plant-based 7°F cooler; open-cell); Dr. Jordan Burns DC (300K Americans AS); NIH NLM (medium-firm best alignment + pain reduction); DreamSlumber.blog (48% less back pain medium-firm)
The most honest answer depends on your budget tier and specific needs. Under $300: the Zinus Green Tea Memory Foam (queen ~$179–$299) and Linenspa Hybrid (queen ~$149–$249) are the best quality options at the lowest price — CertiPUR-US certified, 10-year warranties, and available for immediate delivery at Amazon. Both Tom’s Guide and MattressNerd rate the Allswell Hybrid at Walmart as the best choice if you need a king at under $400 ($397). In the $500–$700 range — where NapLab.com says quality really becomes meaningful — the DreamCloud Hybrid ($649–$699 queen) and Nectar Classic Memory Foam (~$649 queen) both score in the top 35–50% of all mattresses tested at 50–55% below average price. DreamCloud was specifically named best for back pain by CNN Underscored. Nectar excels for side sleepers and couples due to superior motion isolation. The Bear Original (~$498–$598) is the best choice in this range for hot sleepers or heavier side sleepers. For buyers willing to spend up to $850: the Amerisleep AS2 (named #1 for back pain by Verywell Health) and Brooklyn Bedding Signature Hybrid ($665) both deliver premium-quality results at well below average mattress prices.
The research is consistent: medium-firm mattresses (5–7 out of 10 on firmness scale) are best for back pain. The NIH National Library of Medicine confirms this as the standard for maintaining spinal alignment. Research shows medium-firm mattresses reduce chronic low back pain by up to 48% compared to softer alternatives. NCOA.org’s April 2026 testing with older adults named the Helix Midnight Luxe with ErgoAlign as the best for relieving back pressure. Sleep scientist Dr. Carleara Weiss, PhD (University at Buffalo Nursing School) confirms: “Medium-firm mattresses are generally considered the best choice for people with back pain.” For affordable options specifically: DreamCloud Hybrid ($649–$699, CNN Underscored best for back pain), Bear Original ($498–$598, SleepFoundation recommended), and Amerisleep AS2 (Verywell Health #1). Important: body weight and sleep position affect what “medium-firm” feels like — a 120-pound person will feel a mattress as firmer than a 250-pound person on the same bed. If you sleep predominantly on your back, err toward the firmer end of the medium-firm range. If on your side, stay in the middle of the range to allow shoulder and hip contouring.
Ankylosing spondylitis (AS) affects approximately 300,000 Americans and involves chronic spinal inflammation that peaks at night — making mattress selection medically significant. Per Dr. Jordan Burns, DC, and NIH-verified research: medium-firm (5–7 out of 10) is the single most important feature for AS patients. Three additional features specifically matter for AS: (1) Zoned support — the lumbar zone should be firmer than the shoulder zone, to support the heaviest body area without compressing inflamed joints elsewhere. (2) Cooling construction — AS inflammation raises local tissue temperature; gel-infused foam or open-cell foam disperses heat that would otherwise worsen overnight pain. (3) Responsiveness — AS patients shift positions frequently due to pain; choose a mattress that bounces back quickly (hybrid or latex) rather than one that slowly returns to shape (traditional memory foam), which can feel like being “trapped.” For scoliosis: NCOA.org specifically ranks the Helix Midnight Luxe with ErgoAlign as #1 for scoliosis in older adults — its hybrid construction and optional ultra-dense midsection foam layer accommodate asymmetric spinal loading. CertiPUR-US certification on any foam components confirms durability and chemical safety over the 7–10 year lifespan.
Amazon carries the largest selection of budget mattresses, including the best options (Zinus, Linenspa, Bear) and many poor-quality alternatives. Five rules for buying a mattress on Amazon safely: (1) Look for CertiPUR-US certified foam — this certification appears in the product description and confirms the foam meets safety and durability standards. Products without this certification are a red flag. (2) Read verified reviews specifically for durability — look for 6-month and 1-year follow-up reviews, not just unboxing responses. New mattresses always feel good; durability problems appear after months of use. (3) Check the return policy before buying — Amazon’s 100-day return policy applies to Zinus and Linenspa; some other brands have different terms. Confirm before purchasing. (4) Choose 10 or 12 inch height over 6 or 8 inch — thinner mattresses compress faster and provide less pressure relief. The price difference is modest and the sleep experience difference is significant. (5) Avoid purchasing mattresses that come rolled for extended periods over 4 weeks — off-gassing can increase. Allow any compressed mattress 24–48 hours to fully expand and air out before sleeping on it. Most mattress smell dissipates within 48–72 hours with room ventilation.
Sources: NapLab.com Feb 2026 ($500–$700 best value range; DreamCloud 8.66 Vaya 8.80); CNN Underscored Feb 2026 (DreamCloud best back pain); NCOA.org Apr 2026 (Helix Midnight Luxe #1 older adults back + scoliosis; 70% better sleep survey); NIH NLM (medium-firm best alignment pain); DreamSlumber.blog (48% less back pain medium-firm); Dr. Jordan Burns DC (300K Americans AS; medium-firm most important AS feature); EachNight.com Jan 2026 (AS inflammation peaks night; Amerisleep AS2 relief); SleepFoundation.org Mar 2026 (Bear Original; medium-firm recommendation); Tom’s Guide (Linenspa + Allswell best cheap under $500; Plank Firm best firm); MattressNut.com Apr 2026 (Saatva #1; 7–10 year lifespan; CertiPUR-US durability)
Tap any button to find local mattress stores, Saatva showrooms, Walmart mattress departments, or discount mattress outlets near you. Most top-rated affordable brands also ship free directly to your door with 100–365 night in-home trials.
- Step 1 — Identify your actual need before you shop. The most important question is: what are you solving for? General sleep quality → DreamCloud or Nectar in the $650–$699 range delivers the best independent test scores per dollar. Back pain → start with medium-firm and look for CertiPUR-US certification and zoned support. Hot sleeper → prioritize coil/hybrid construction and gel-foam; avoid all-foam. Side sleeper → prioritize pressure relief at shoulders and hips (softer comfort layer). Heavy sleeper (230+ lbs) → need a firmer mattress and thicker coil support core. Without clarifying your primary need, price alone is a poor guide.
- Step 2 — Only buy with a minimum 100-night in-home trial. Every reputable affordable mattress brand listed in this guide offers 100 nights or more — Nectar and DreamCloud offer 365 nights. A mattress needs 30 days of regular sleep to properly evaluate; your body adapts to the new surface. Never purchase a mattress without an in-home trial from a brand that will arrange free pickup (not require you to ship it back). The trial period is your single most important consumer protection. Saatva explicitly states a 30-day break-in period before returns are initiated — read each brand’s specific trial terms.
- Step 3 — Shop during major sales for meaningful discounts. Memorial Day, Labor Day, Presidents’ Day, and Black Friday consistently offer 20–40% off from major mattress brands. NapLab.com’s testing found that foam mattress prices dropped 8–12% in 2026 versus 2024 — meaning everyday pricing is now better than it was. But sale events still deliver the best single-purchase prices. Sign up for brand emails 2–3 weeks before major holidays to receive early access. Most brands have a price match policy — if you see the same mattress cheaper elsewhere, ask them to match it before purchasing.
- Step 4 — For back pain, ankylosing spondylitis, or scoliosis — consult before you buy. The NIH-confirmed medium-firm recommendation is a good starting point, but individual needs vary by body weight, sleep position, and the specific area of pain. NCOA specifically recommends that older adults with back pain consider the Helix Midnight Luxe — which can be matched to your specific needs through their Sleep Quiz. For AS patients, cooling features (gel foam, open-cell construction, or coil airflow) should be prioritized alongside firmness because AS inflammation raises skin temperature at night. Your physical therapist, chiropractor, or primary care physician may have specific recommendations for your case — many are familiar with the major mattress brands and can provide guidance tailored to your diagnosis.
- Step 5 — Replace your current mattress if it is 8+ years old or causing morning pain. Most mattresses last 7–10 years, per MattressNut.com’s 2026 testing database. The clearest signs you need a new mattress: you wake with back or joint pain that eases within 30 minutes of getting up (the mattress is causing the pain, not restoring you from it); visible sagging, lumps, or body impressions deeper than 1 inch; you consistently sleep better in hotel beds or guest beds. NCOA’s March 2025 survey found 70% of people experienced better sleep quality after getting a new mattress. If morning pain is your primary concern, even a budget mattress ($500–$700) that is new and appropriate for your sleep position will likely outperform your current worn mattress — the age and condition of your current mattress matters more than the luxury level of your new one.
This guide is independently researched for informational purposes only. Mattress prices change frequently — always verify current pricing directly with each brand before purchasing. Firmness ratings are based on independent testing organizations and may differ from manufacturer descriptions. This page does not constitute medical advice. Consult your physician, physical therapist, or chiropractor for personalized mattress recommendations if you have a diagnosed spine condition, chronic back pain, ankylosing spondylitis, or scoliosis.
Primary sources: SleepFoundation.org Mar 2026 (avg queen $1,000–$2,000; all-foam $700–$1,200; Bear Original; firmness scale 1–10); NapLab.com Feb 2026 (avg queen all types $1,455; DreamCloud $649 8.66/10 55% below avg; Vaya $699 8.80/10 52% below avg; Boring AF $699 8.72/10; under $400 severe quality drop; best value $500–$700); MattressClarity.com Mar 2026 (Brooklyn Bedding Signature 4.7/5 budget hybrid; Saatva Classic back pain; medium-firm research back pain; Helix Midnight Luxe); NCOA.org Apr 2026 (Helix Midnight Luxe ErgoAlign #1 older adults back + scoliosis; 70% better sleep Mar 2025 survey; DreamCloud free shipping 365-night forever warranty; Dr. Carleara Weiss PhD SUNY Buffalo medium-firm best back pain); CNN Underscored Feb 2026 (DreamCloud Hybrid best back pain; Nectar Premier best stomach; Sleep Number 100-night 15-yr); MattressNerd.com Apr 2026 (Allswell king $397 “steal”; Linenspa + Allswell both under $500 queen best cheap Tom’s Guide; Brentwood Home Cypress $499 full); MattressNut.com Apr 2026 (40+ brands tested 60+ nights; foam 8–12% cheaper 2026 vs 2024; Nectar 365 all models; Saatva #1 support+durability; Purple pressure relief; Helix customization; Zinus + Nectar best value under $1K; Bear + Brooklyn best hybrid under $1K; most mattresses 7–10 yr); NIH NLM (medium-firm best support reducing pain + maintaining alignment); DreamSlumber.blog May 2025 (medium-firm 48% less back pain vs softer; Dr. M.A. Ehsan PhD PT); EachNight.com Jan 2026 (Amerisleep AS2 AS; Saatva reinforced edges easier seniors/mobility; ~300K Americans AS Dr. Jordan Burns DC); Amerisleep.com (Bio-Pur plant-based; open-cell 7°F cooler; Refresh Cover; 100-night 20-yr warranty); Tom’s Guide (Linenspa vs Allswell best cheap; Plank Firm best firm; DreamCloud $699 king Amazon)