I've had a couple of the Thermarest similar to what you linked for years and they are great! Highly recommend them.
Since I live in an earthquake prone area, I consider good camping equipment essential not only to my survival but to my comfort in an emergency situation. If you invest in quality equipment and take care of it you will have it for years. I would never want to be caught in one of those blue tarp cities as seen in Haiti!
Camping equipment really serves a dual purpose of great recreation and
very nice to have things in a emergency or survival situation.