Not Ranked
Actually I was thinking more along the lines of NOS (new old stock) where 'age' should not be a deciding factor.
But the point is not lost:
NEW parts because you can't be sure what abuse has been handed down to 'old' parts. Now I feel comfortable with my 'old' parts because I had them checked out for size, straightness, balance, etc. Short of having them 'x-rayed' I think it is reasonable to assume there 'good to go'. Even a NEW part can be 'defective', and in that regard there is always a 'risk factor'.
I'm not NASCAR where you throw away 'old' parts after one race, x-ray new parts, and money is no object. I would guess few of us are! I think it's reasonable to look for a balance between 'cost\benefit', I wouldn't turn up my nose at a 428 1U crank at a yard sale for a good price, for instance.
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