they rib all mountain and are sweet for hitting big jumps... tails are a bit soft and make a fun ski in the park.... not a dedicated rail ski though ??its up to u. durabilty wise they are the best on the market.
I have the 06s which have a 78 mm waist, and I like them. They were a little stiff for my liking, it took a while for me to break them in. In terms of durability, they held up fine.