Bought a King size Estate Sterns and Foster mattress fro Mattress King. It was delivered and set up Friday afternoon. Installed the special mattress cover recommended by Mattress King and made the bed. I lay down on it on the side that I normally sleep (I am 6 feet tall and weigh 185 pounds). I sank down about five inches into the mattress and felt like I was laying in a trench. I was immediately concerned and commented to my wife that it was much less firm than the Sterns and Foster Queen size we had bought last year. We bought them both from... read full review »