Since October 2008, I have replaced 3 sets of mattresses and working on replacing a 4th set. My first purchase was a King size Sealy. This set I was able to use until around February 2009. The second set was a Simmons. I like it; however, it was also lumped and bumped on me after about a month. The next set I tried a Serta. This only lasted 3 weeks. I asked to replace with a Simmons, becasue of all three, I liked the simmons the best, because of the individual springs. I am now (today November 27, 2009) have set up an appointmet for... read full review »