I have had the Simmons Beauty rest for about 4 years. It was initially a good mattress but then started to sag. Me and my husband constantlly wake0up with back pain from the mattress. We have a peak and valley in our mattress. We called Simmons and there Customer service department stinks!!! Rep came out and told us tat the mattress is sagging, but there is nothing that he could do for us. We just went out and bought a sterns and foster set so hopefully we get a better nights sleep. I do not recommend this mattress unless you want to have back pains... — … read full review »