I compete in formula, and then I do slalom whenever it's over 7m/s. BUT if I'm going to compete in slalom as well I would probably need the 131, anyway the 111 would probably be the the best board if I only do slalom for fun. The problem is that I really like to compete
I also understood that the 133 is awesome. But the 131 would definitely require a smaller board to be able to enjoy the 20 + Knots winds. No money no funny..