Within three months of buying our new Serta pillow top my husband and I were sleeping in valleys. Since we cannot just run out and buy a new mattress we are both now waking up with terrible aching backs. It has gotten to the point that I dread going to bed at night. When our two year old granddaughter is dropped off for the day she is laid down in a hole. If she was a baby I wouldn't have to worry about her rolling off the bed. We definitely will never purchase a pillow top mattress from Serta again. read full review »