I expected this to be nice, but it's heaven. I know mattress comfort is very subjective, and I have made lots of expensive mistakes in my day. This isn't one of them. I bought it for the guest room, and now I'm sleeping in the guest room. I've had it only a month so cannot comment on how well it holds up, but I really like the support and comfort. Take note not to open the plastic until you have it in the room where you plan to use it. It takes shape quickly, and it is not easy to move around.
I got this mattress 3 years ago but I wanted to wait and give it a fair review. I don't have lower back pain but I was waking up to lower back pain every morning. The mattress is not soft so I had to get a memory foam topper to be able to get a good night sleep. The overall experience wasn't too bad but I could've saved that extra money I had to spend on a topper