I want to put one of the GYT-R heavier flywheels on my 06, but having a hard time deciding if I should go with the 6 oz. over or the 9 oz. over. I ride mostly woods/desert, don't spend much time on the MX track because I suck at MX. It seems most guys are going with the 9 oz. over, but just curious what people have tried and how they like it.