In order to find the residencies of Ross and SGU just go on their websites. print it out and compare. As you will seethe majority of FMG students go with Internal medicine and family practice. I would say that you should find out on the SGU forum if their students get the clinical center they want to do all rotations. To me I would see it as a major difference. If you were "guarenteed" if you performed well in basic sciences that you could get to do all your clinicals at one hospital which was a good hospital, since non of the affiliates with either school is a great hospital, and if you lived near the hospital it may save you time and money. As far as lifestyle goes only someone who has been to both Dominica and Grenada for a long period of time could answer that question.
Good luck in your pusuit of getting an MD after your name.
When you become my age you will realize all of the hard work and studying was worth the effort.
"60 years young" another 60 to go if my doctor sons keep me alive with free prescriptions!!