I'm not nearly the quality of skier as @ Than_Bogan, however, at Nationals I spent some time examining the OB4 system and came away thoroughly impressed with not only the engineering concept but the quality of construction and the "feel" of the product. As a skier who has never been seriously hurt (but has lots of friends that have broken ankles and other things) I really like how the OB4 potentially reduces the number of variables that I have to worry about. Things like how old the Velcro is, how tight the bungee cords are, how worn the rubber bindings are etc. Sure there's still some variables - just not as many. Here in Texas it's still warm and I don't want to mess with my skiing but at the close of the season I'll probably pull the trigger and try them out.