Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Serta Perfect Sleeper X Quilted Hybrid Level Two
Flurry Lux Cooling 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
8.2/10
9/10
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
Serta Perfect Sleeper X Quilted Hybrid Level Two
Flurry Lux Cooling Hybrid
Price (Queen)
$1,799
$1,799
Type
Hybrid
Hybrid
Firmness
5.5/10
5/10
Height
Varies by comfort level
14"
Trial
120 nights
120 nights
Warranty
10 years
20-year limited
Shipping
Free shipping
Free shipping, ships in 3-5 business days via FedEx
Key Advantages
Why Choose Serta Perfect Sleeper X Quilted Hybrid Level Two
- Micro coil layer adds pressure relief and responsiveness
- Extra memory foam over Level One
- Five comfort zones on a zoned Q4 coil base
Why Choose Flurry Lux Cooling Hybrid
- Graphene-infused foam actively conducts heat away — one of the strongest cooling builds under $2,000
- Plush euro top gives genuine shoulder relief for side sleepers, unlike most cooling hybrids that sleep firm
- Two firmness builds (Medium and Firm) from the same platform, so couples and heavier sleepers have an option