I rode the jib nas for two seasons, and this thread has pretty much hit the nail on the head
their durability is so-so, they're stiff as crap, the magnetraction is a gimmick, and they definitely are not a "fun" ski to ride, i'd really describe them as more of a chore to ride
i ride halos now, and i'd never go back to those junkers
also, lib-tech is notoriously stingy with warranties
don't buy them