Side-by-side mattress testing · 144+ comparisons published
Updated September 2026
Category
Personal Comfort A8 Number Bed
Sleep Number i8 Smart Bed
Comfort
Not lab tested
8.8/10
Support
Not lab tested
8.9/10
Cooling
Not lab tested
8.5/10
Edge Support
Not lab tested
8/10
Motion Isolation
Not lab tested
9.5/10
Durability
Not lab tested
8.3/10
Value
8.7/10
7.5/10
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
Personal Comfort A8 Number Bed
Sleep Number i8 Smart Bed
Price (Queen)
$2,799
$3,099
Type
Air Chamber Number Bed
Air Chamber
Firmness
5.5/10
5/10
Height
13 inches
11 inches
Trial
120 nights
100 nights
Warranty
25 years (limited)
15 years
Shipping
Free shipping in the continental US
In-home delivery
Key Advantages
Why Choose Personal Comfort A8 Number Bed
- 45 firmness settings per side, finer than Sleep Number's scale
- 25-year limited warranty with individually replaceable components
- Typically $800–$1,200 less than a comparably equipped Sleep Number i8
Why Choose Sleep Number i8 Smart Bed
- Adjustable firmness 0-100
- Dual-zone for couples
- Advanced sleep tracking