If you're looking for durability, I don't think you'll necessarily find it. A balloon is a balloon. That being said, the Thermarest pads are pretty durable. I used my Thermarest All-Season for 6 months almost nonstop and it held up, even on strange surfaces like sand, dry grass, wood flooring, and rough carpet.
Now I have a Thermarest X-Therm and it seems to be thinner, but the same level of quality. Despite that, I hate blowing up thermarests, so all spring and summer I'll be using CCF. I'm an easy sleeper, not picky.