I rely heavily on the foot pedal. The single-pedal is too light and really wants to be bolted to something heavy so it doesn't slide around. The triple-food pedal is much nicer, just because it's heavy and stays put. I map all three foot-buttons to the same thing.
I used the triple-foot pedal for about 1.5 years. I now have chronic discomfort in my left foot; the one I used for the foot pedal. Of course it might be a coincidence, or it could be a RSI from using the foot pedal.
