We do not own a Tempurpedic, but have tried one at a hotel that had it. Many have told us that Tempurpedics are comfy, but can feel hot because the bed material forms such a close fit to your body shape. After trying it for a night, we agree.
Even Janet, who almost never gets too hot, thought it was too hot. I was very hot, and we had to set the room A/C to about 62 or 63 to have any chance of getting to sleep. Very comfy, but ridiculously hot.
It's not hot at first, but after about 15-20 minutes, the heat really builds.
Before spending multi-thousands on a bed, I would STRONGLY suggest that if you can, first try to find a hotel that has them to try it out for a night.
Personlly, we LOVE our Select Comfort Sleep Number bed.
<message edited by Glenn1234 on Sat, 02/18/12 6:00 PM>