I bought the thickest memory foam bed Overstock sells 3 years ago.

I. LOVE. IT!!!

It doesn't feel "hot" to me (and I've gone through rapid onset menopause due to the chemo when I had my reboot). I live in Texas and even in the summer I sleep with a sheet and a light cover. No problem.

I've suggested this mattress to others, and all have been VERY happy with their purchases. It's also SUPER fun to unwrap it and watch it expand before your very eyes! If you unwrap it early in the morning, it's fine for sleeping the first night!

Good luck!