Fixed bindings are lighter and people say give a better ride. All though accidents are very rare when they do happen there the worst. Spiral fractures and knee injuries, not nice and will put you out for a long time. Personally i use releasables (spruce risers with salomon c509's). For the one reason that if your constantly worrying about falling, you don't ski with fun and dont push yourself. And i like to push myself. Enjoy.