The Bottom LineDreamcloud, iComfort Advisor and Sapira are entirely different in their mattress materials, feel, and features. The China-made Dreamcloud is a medium-firm mattress with several layers of memory foam, latex, and microcoils. Back and stomach sleepers may enjoy Dreamcloud the most. Side sleepers mention stress on joints due to excessive sinkage. Serta iComfort Advisor is a soft hybrid mattress, suitable mostly for side sleepers and some heavier back sleepers. The 11-inch Sapira is medium-firm mattress, featuring the “Avena” foam, known for its resilience, responsiveness, and breathability. The Sapira’s gradual support and balanced feel enjoys rave reviews along with its luxury-like features. All the three mattresses under comparison are in the same price range, but Sapira is ranked better for cost-based value. Serta iComfort Advisor Pillow Top may suit heavier persons, and Dreamcloud can work for some back and stomach sleepers, but for all others,the US-made Sapira is the best choice for comfort, quality, and durability.