I've always preferred a high gear for most climbs that'll take it. For the last 2 months i've experimented with lower gearing and i think i've improved my climbing. I've been counting my cadence on most climbs and i'm now turning the peddles at around 75 to 80 rpm compared to my old 60rpm. I've also noticed that the back of my thighs have become stronger and i seem to be able to tackle hills without having to stop sometimes. I remember when Lance Armstrong and Jan Ullrich were battling it out in the TdF about 10 years ago. The Tv commentators kept referring to Ullrich's powerful, but slow cadence in comparison to Armstrong's high one.Some stated that you have to turn the wheel very quickly to win the TdF, Armstrong was Ullrich wasn't so... Do you peddle high or low?