Side-by-side mattress testing · 144+ comparisons published
Updated May 2026
Category
Purple RejuvenatePlus
Black Diamond
Comfort
9.2/10
9/10
Support
9.1/10
8.8/10
Cooling
9.5/10
9.4/10
Edge Support
8.7/10
8.5/10
Motion Isolation
8.5/10
8.7/10
Durability
9/10
9/10
Value
7.2/10
8.2/10
Quick Specs Comparison
Spec
Purple RejuvenatePlus
Black Diamond
Price (Queen)
$5,310
$2,599
Type
Hybrid
Hybrid
Firmness
5.5/10
5/10
Height
15.5 inches
14"
Trial
100 nights
120 nights
Warranty
10 years
20-year limited
Shipping
Free delivery in 7-10 days; FSA/HSA eligible
Free delivery
Key Advantages
Why Choose Purple RejuvenatePlus
- 3 inches of GelFlex Grid — enough depth that side sleepers do not compress through to the transition layer
- Widest sleeper-position range in the Rejuvenate collection; genuinely works for side, back and combination
- DreamLayer top softens the grid's first impression while keeping airflow intact
Why Choose Black Diamond
- Ice Flex Cooling Technology provides outstanding temperature regulation
- Premium hybrid construction with individually wrapped coils for targeted support
- Multiple comfort options (Plush, Medium, Firm) to match your preference