I researched what bed would be best for a side/back sleeper. I found the medium hybrid would be the best choice for me. I have had the bed since July 22nd. I still wake up with shoulder pain and lower back pain. Unlike many of the reviews, I wake up frequently and have to reposition. It is cooler than the Posturepedic, but I had to buy bamboo sheets to help with that. I am hoping that I will feel differently as time goes on. I am certain that one of the Tempurpedic mattresses would be a good fit. I wish I knew which one.