Bindings matter in the sense that if you go super cheap you'll notice. When I started snowboarding I didn't have a ton of cash and bought some cheap ass plastic crap made by Morrow. It wasn't until a few seasons ago that I replaced all my gear and found out how much of a difference good bindings can make. That being said, as long as you get something from a pretty good company, ride, union, etc. you'll probably be fine. I use ride bindings because I prefer a slightly stiffer and very durable binding and the wedgie footbeds are awesome!