The Bottom LineNectar, Cocoon Sealy Chill, and Muse, all have memory foam in their comfort layers. Therefore, all these mattresses have excellent conforming ability. The pressure-relief is excellent with enough give for side sleeping comfort. The China-made Nectar has medium firmness with no softer/firmer options, and appeals only to a specific subset of sleepers. Overweight persons often feel stuck on Nectar and feel aches and pains in their joints. Both Cocoon Sealy Chill and Muse allow you to choose the mattress firmness. Therefore, if you prefer a more on-the-mattress feel, Cocoon and Muse are better options. However, the 10-inch Cocoon Chill has only a thin layer of memory foam and as a result, conforming support by Cocoon is quite limited. Moreover, both Nectar and Cocoon customers report heat retention and sweating.The 12-inch Muse solves both these issues. It has a thick layer of memory foam for conforming support but at the same time, its uses innovative Cold Wire yarns, making it the coolest of these three memory foam mattresses. If you prefer memory foam feel but sleep hot, Muse is clearly the best option for you. This US-made mattress offers you the best value for money and most durable sleep solution.