Some of you know about the back injury and paralysis I suffered in a car accident 5 years ago (this is the accident that totalled my LT1 powered Buick Roadmaster Limited, not my fault). Lilpooky and I were both in the car, which sustained 10k of damage to the back end. The impact was so severe, my baseball cap came off my head and was in the back window after impact. It turned the trunk inside-out, and shoved it into the back seat.
I survive by my Select Comfort bed. I * h i t you not. It takes time (a couple weeks or so) to find your 'comfort level'. But I swear to you it'* one of the best investments I ever made.
Once it'* set, it makes no noise. It'* also cooler in the summer.
Spend the extra money for the pillow top, or get an 'egg crate' pad for it.