Hi weinsss,
You can read some general comments about airbeds in this article.
Post #2 here has more comments about the Tempurpedic mattresses and many of the models they make.
I would suggest starting your mattress research with the tutorial post here which has all the basic information, steps, and guidelines you will need to make the best possible mattress choices … and avoid the worst ones.
There is more about the factors involved in durability and the useful life of a mattress in post #4 here but in general the most important factor in the durability and useful life of a mattress is the quality/density of the comfort layers in the mattress.
You can also read more about the effectiveness of using mattress reviews as a way to make a mattress choice in post #13 here.
Phoenix