I'm originally from Florida, and I have done some research on both places. Miami definitely gets the nod in terms of reputation. But your decision should be based on more than this. USF is a fine school, in a nice area, with a much reduced tuition.
You may want to research potential areas of specialty at each particular school. This may automatically rule one out for you. For example, USF has a pretty decent general surgery program for post-grads. But it offers nothing for ortho's. Hence, if you were interested in orthopedics, USF might not be the best choice. Maybe with some comparisons one school will eliminate itself. If not just go with where things feel right. At least you've been accepted. I wish I were in your shoes. I've still got to finish this torturous task of application. Good luck in your decision.