It was a great bed for about a year then it started collapsing. We can feel the springs now and it's been less than five years. We have even rotated the bed on a regular basis and we have a memory foam topper (2 inches) but the springs still cause problems. We saved a couple hundred buying this brand but now it causes back pain and will need to be replaced. They used to be a great brand but they have not been great for several years. Comfort It was very comfortable and firm at first but now it's very uncomfortable even with regularly rotating the bed. Support It provided great support initially but now we sleep in a crater and it causes back pain. Firmness Initially it was the firmest mattress we could find and it would have been a ten but it lost a number per month until it finally settled at around a six. At this point it's as firm as any other mattress you can find. Durability This has the worst durability of any mattress I've ever owned. We've owned it less than five years and it's the worst mattress I've ever owned. For the first few months it was great but it quickly fell apart. After a year it was as bad as the mattress we replaced and after three years it was beyond poor.