Does anyone have any idea if the NY Fahgettaboudit 1410 chain (Kryptonite rating = 12) is really better than the NY Evolution 1210 chain (Kryptonite rating = 10). I would assume that the NYFU weighs a little more, but every website seems to have a slightly different weight. Also, looks like the NYFU has a slightly bigger opening in the lock portion, which may allow better access for tools, but a thicker shackle links. What do you think? Worth the extra 20 and weight? I'll prob use either in conjunction w/ one of the mini u locks if I'm leaving it locked for a while...