PC pretty much hit the nail on the head. they are both good for everthing, pretty much the same medium flex, but the only difference is that the punx is symmetrical. also, if you ski really hard, i'd say go with the thalls, they are durable as it is, and armada warrenty dept. is one of the best in the business...and atomics, well lets just say there has been more than a few that have had bad experiences with them