To the question about fit I can tell you this, I wear a size 8d in Vapors, and 7.5Din One 95 Vapor XXXX for me anyways fit the same for my original Vapor 8, My vapor X, and now Vapor X60 all 8d fit is similar enough, i find the x60 very easy to skate in right out of the box, although i find the ankle position a bit different from the 8's and 10's which I owned, I never had the 40's just tried a pair via a friend Hope this helps for what its worth also I wear a 10 shoe