I have a Queen size Stearns and Foster box and matress set. Not long after I slept in it I started getting neck pain. It radiated up into back of head. At first I attributed it to TMJ, however after going on vacation and sleeping on my old mattress (10 years old) in my camper I realize it is the mattress. My chest and back sink into it but my head is propped up by my pillow. If I sleep without a pillow it is less intense but I usually find myself looking for the pillow as I move from side to side and wind up using it and getting a sore neck. I am looking to replace it it is only 2 years old. I do rotate it and it is a pillow top. I tried elevating the head to lessen the effect, but it is not enough.