FWIW, none of my bikes have cranks the same length. The only ones I actually notice being any different are 155mm. The longest are 175mm and I cannot tell the difference between 175, 172.5 and 167.5
Same here. I've got cranks from 165mm to 175mm on various bikes and don't really notice the difference. The only ones where I notice the difference is the 135mm cranks.
FWIW, none of my bikes have cranks the same length. The only ones I actually notice being any different are 155mm. The longest are 175mm and I cannot tell the difference between 175, 172.5 and 167.5