ok so here's my deal...im trying to put a new vanguard on my pair of old pure white nike zoom's, and am wondering about the sizes. The skates are a size 10, and read somewhere (cant find it now of course) that with the older skates (nike and bauer specifically) that a medium mission chassis will fit size 10, but then I have been told that it doesnt matter and a size 10 skates will need a large. Any input?