Originally Posted by
Thetank
HAHA, really how many bikes with XDs have you ridden? And how many with 75s? Flex will come from your frame's BB before your cranks. The difference of course is manufacturing quality but for street use there is no need for anyone to use 75s or better unless they just have the money to spend/waste.
Agreed if your just going to be commuting on the bike here and there then who cares, but if your putting some serious miles on the bike and want more power to go directly to the wheel use 75's over the rest.