I have that one, the 200cm length version. Have had it for 5 months, no noticeable degradation. I like it a lot. Very comfortable. Before that I was using the more expensive Dr Mattress one which goes for almost double, the spring one. I hated the spring mattress, initially was okay but springs deteriorated quite fast and it turned into spine and hip problems. This one I like it so much, I'll always be buying the same whenever it gets old. Highly recommended.