I went with 2012 Restricted Cartels and couldn't be happier on my Proto. With some Med flex boots (Ambush) it's soft enough to get a feel on the rail and responsive enough for anything in bounds. Bonus, you can swap the asym straps for even more flex for freestyle though I've yet to see the need. Granted I'm not Easy McSteezy on rails but I've yet to feel that the binding were too stiff or too soft for anything in the park. I ride East Coast if it matters.