I completed a TY program that is affiliated with one of the top hospitals in the country, granted I was at their smaller satellite facility, but I still worked daily with some of the best residents in the country. I felt that working with brilliant people made me a better physician down the road, but no one knows or even cares where you did your TY/prelim program. I applied to several strong med prelims and I felt they didn't really want applicants who were heading into other fields, those spots went mainly to well qualified FMGs who they wanted to "try out". By "try out" I mean give them a prelim med or surgery spot and if they are capable, they then offer them a categorical spot.