Ghostbed offers three models utilizing memory foam the Chill, the Original, and the Grande.  They differ from Tempurpedic in that the memory foam has a faster response rate making it far easier to move around on a GhostbedGhostbed also utilizes ice touch fabrics that regulate your body temperature for the optimum sleeping conditions.   Stop into any local Texan Mattress to try them before you buy.  Ghostbeds are simply amazing.