since you helped me with my gear ratio question. I figured i'd try here.

the difference between the single and double gate is probably marginal, but the pedal you choose (since you implied you're getting new ones) is very important. In the MKS line (which are the only i would ever get) the track and road pedals are great, but tend to put a pressure point on your foot since they are a "cage" or wrap-around style. the gr-9's however seem to be more of a platform type of pedal that will hopefully suit you well. They have been known to be skinnier though.