We bought a Sealy Element II. We turned it every week as recommended. The springs did not seem to be of the same gauge - I know it was supposed to have 5 "body zones" but there was no continuity across each zone - Four months later it was sagging in the middle, the foam seemed to be squirting off the sides and we were both uncomfortable. My wife and I weigh 110 and 166 lbs respectively and have not performed any spectacular gymnastics on this bed. Fortunately, Sears has agreed to take back the bed and provide us with a new one - but what to buy - there are so many complaints about Simmons and Serta that we don't know where to turn - maybe we'll just get a hammock?