i'm using a set on my quad..cos its a minter and i'm using new parts for it whereever i can.
250 for a set of nice second hand cranks with single pincj, vs 100 max for the same cranks but with a dual pinch and that are new....
if we did everything authentic to everything, prices would go even higher, cos the demand would increase...
i like em, so i use em, thats my rationale...each to there own though...
i dont subscribe to 'it has to be a certain way' type thoughts....