In reply to Matt does not bounce: Have had a pair of cruxes, and found they fitted very well. But then thats entirely down to my foot. Go for the shoe that fits the best as claims about rubber are totally spurious until you get to high grades and even then I personally (having watched somebody piss up 8a+ in cruxes) think its far more about your technique, the type of shoe and the fit of the shoe. Maybe I'm just old fashioned...