We had a foam top but I wasn’t sleeping very well did research on this one ordered it. From day one there wasn’t any of the bad smell I had read about it took its shape right away I was able to make my bed within an hour of placing it on the bed. That night was the first night in ages when I laid down I was able to relax. I have arthritis full body An my spine in a mess. I fell asleep An didn’t toss as turn because of pain due to the foam mattress being so comfortable. Best money I’ve spent in long time. You won’t be unhappy with this. I ordered the queen, my sheets are staying on perfect also. Very happy with this.