Hi handorson,
While I haven’t owned this mattress … I can confirm that the memory foam (4" of 5.3 lb memory foam) is high quality and would be very durable. The only question mark I would have is that Tempurpedic has been lowering the quality of their base foam to 1.5 lbs (and it’s uncertain if this is on all of their mattress or just some of them) and while this wouldn’t have a significant effect on durability … it may have some smaller effect for people that were heavier and tended to “go through” the comfort layers and sink more deeply into the polyfoam support layers below. Unfortunately, they no longer disclose the specifics of the materials in their mattresses so it’s also possible that they could have changed the quality of the memory foam as well although this is less likely and the density of their memory foam is fairly well known.
Post #12 here has a list of online providers of memory foam mattresses and most of these would have equivalent or better quality memory foam mattresses at significantly lower prices. Most of them would also be able to provide you with some guidance about which of their mattresses are rough equivalents to the Contour Select in either “feel”, quality of materials, or design … or in some cases all three.
There may also be equivalent quality memory foam mattresses available locally and if you let me know your city or zip code I’d be happy to let you know of any better options or possibilities I’m aware of in your area.
Phoenix