I posted some info not that long ago regarding Ross' 2013 class that can be found here (draw your own conclusions):
http://forums.studentdoctor.net/threads/months-at-ross-medical-school.1085561/#post-15503854
Furthermore, there is a lot of concern about the decreasing number of funded GME spots and the expansion of U.S. medical schools and positions at existing schools. Some feel that the competition will be too tough in a few years for Caribbean (or other true IMGs) to even be considered for residency, unless they go to a U.S. program. My assessment is that the gap will narrow by 2021, but there will still be some spots available to non-trad grads.
I posted info on this topic beginning here:
http://forums.studentdoctor.net/threads/why-is-the-caribbean-a-bad-decision.1029336/#post-14747416
Whatever you chose, be informed and good luck!
-Skip