I'd definitely go D.O. I know everyone says that once you're in residency nobody cares about what school you went to, even if its overseas. And that having an M.D. behind your name is all that matters. But if you look at it practically, what difference does it make if you never get into a residency. As a US grad, MD or DO its just easier to get a residency. If you go the IMG route, you have to work your butt off to be near the top if you want to get a residency. If you don't think you can do that, then stay in the states.