Nike Air Switchblade

Pros: Fantastic fit, they run small (good if you are actually going to use it on rock), very comfortable, look cool.

Cons: Poor design of strap that runs around heel (wears down and tears), sticky sole material means that the soles wear down very quickly if you wear them on the street.

Of course, the biggest con is that they aren't available any more, so I can't replace them, which I would love to do.