we researched, shopped, went to stores laying on all kinds of mattresses, and landed on the Tempur-Adapt. for us, it was a very good choice. it is somewhat cooling, but not totally which is good for my husband. we both feel like we sleep so much better and deeper. I sleep on my side, and back, and either way is supportive and comfortable. I will be anxious to see how this hold up for us. the weird thing is, and I have not seen this mentioned anywhere, is that the California King sheets fit better than our king size sheets did. we just happen to try a CK that my mother had, and it fit great. I don't think anyone would be disappointed in making this purchase.