It isn't Dura Ace or nothing. There are several high end cranksets available. Campy record pista and Sugino 75s are both very nice and can be found on professional track racer's bikes. Just below that is SRAM Omniums with are often stiffer than any of the above but have problems with their GXP bottom brackets. Any of these are going to be nicer than the cranksets that come on the bikes that you linked to.