I bought this mattress because of the reviews I read. The mattress we replaced was only 5 years old (a pillow top) but caused many morning aches and pains. We recieved our memory foam mattress in only a few days and couldn't wait to use it. It had an odor that dissipated in a couple days. We ordered the soft mattress. It was quite firm. After a few days, I noticed less and less back pain in the morning, but still felt I wanted a "softer feel", so I ordered a 2 inch visco elastic foam topper by serta from Overstock. Again, recieved in only a few days. Now I have that "softer, sinking-in" feeling and love it!!! Much improvement in sleep time with much less back pain in the morning. We ordered another one for a spare bedroom with another foam topper, and plan on buying another to send to our son's for the bed we sleep in when we visit there. GREAT MATTRESS and GREAT PRICE!!!