I purchased a Dynasty mattress on Amazon 8 years ago and it was wonderful. Over time it got a few sagging spots on each side, but was still comfortable. I ordered this one because I needed a FIRM mattress due to multiple surgeries. This has not disappointed yet. It is SUPER FIRM, my last was medium, and took a week or so to get used to. I am very happy so far and hope it lasts 8 years like the last oneThis bed has made a huge difference for me and my sleeping. It's so comfortable for me, I was worried at first it wasn't going to be firm enough for my back. But it was amazing , I didnt remember what it was like to sleep through the night. I use to be up all night with pain but now I sleep through the night. Thank you so much!!!Very comfortable. Ive had one for about 8 years now. Holds up very well! My children also have this bed. Very soft and comfortable, yet firm enough too, even after all these years. Can sit on the edge well.The extra firm was exactly what I needed to help with my back pain.Extra firme como lo necesito.did not want softness so I got the firm. Happy with purchase.I bought this in 2017 for $499. I came back to see the cost and it's now $769. It's literally the best mattress I have ever slept on. It still feels great and doesn't have indenitions or anything. You won't regret it. The perfect mix of comfort and support.Perfecto muy duro como yo queria ,tengo problema en la espalpa y me salio.perfecto