Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Spa Sensations Serenity 8" Memory Foam
Linenspa 10-Inch Gel Memory Foam Hybrid
Comfort
Not lab tested
Not lab tested
Support
Not lab tested
Not lab tested
Cooling
Not lab tested
Not lab tested
Edge Support
Not lab tested
Not lab tested
Motion Isolation
Not lab tested
Not lab tested
Durability
Not lab tested
Not lab tested
Value
9.5/10
9.6/10
Blank cells mean that model has not completed our instrumented lab protocol, so we publish no measured score for it. We never estimate a number we have not recorded.
Quick Specs Comparison
Spec
Spa Sensations Serenity 8" Memory Foam
Linenspa 10-Inch Gel Memory Foam Hybrid
Price (Queen)
$180
$229
Type
Memory Foam
Memory Foam Hybrid
Firmness
5.5/10
5.5/10
Height
8 inches
10 inches
Trial
90 days (Walmart)
Amazon return window (typically 30 days)
Warranty
10 years
10 years (limited)
Shipping
Free shipping
Free with Prime
Key Advantages
Why Choose Spa Sensations Serenity 8" Memory Foam
- Incredibly affordable — $180 for a queen
- Over 27,000 reviews with 4.4-star average
- Green tea and charcoal infused for freshness
Why Choose Linenspa 10-Inch Gel Memory Foam Hybrid
- Coils plus gel foam under $250 — the best specification-per-dollar on Amazon
- Sleeps cooler than same-price all-foam competitors thanks to the coil layer
- 10-year limited warranty on a budget mattress