Considering the recent crackdown on U.S. modchip shops, I'd probably go Canadian if possible. When the Feds walk in and seize all the computers at a mod-chip shop, those guys now know that you've got a modded system. If some ---uvula--- overachiever ever decides to take the war to a different front, and go after the end-user, you don't want your name showing up on an FBI list . . .