'11. It's the first year with the new physics-based engine. It's also the cheapest after '10, which has the old engine. I really like the feel of the newer games, but I still have '11. The Be a Pro and GM modes are also great in '11.
Different feels imo. 12 is more fun to play around with. 13 is more sim except over exaggerated hits --- The Rodney Dangerfield of the POW... Formerly the GSB The Amazing Viper is your new board savior - MantleNotMouse