>>1216887DA is nice, i've got mechanical on one of my bikes and it's really smooth. I'd rather invest most of my cash in a frame+wheels before going for a high end groupset though; unless it was a build not restricted by cost.
>>1216889>He still believes crank length should be correlated with heightSee pic.
Short cranks feel good, accelerate fast, and are more efficient for a given torque development factor; they're my preference over long cranks any day of the week but gearing needs to be compensated and they're harder to get for road bikes.
That said, I'd settle for 165mm cranks in a pinch because they're worlds easier to find.