I trained at one of the best residencies in the country, and probably the richest radiology department in the world.
Having said that, I do not think my training was any better than my old med school roomie who trained at a state university. In fact, he is faster and more efficient than many of my "academic elite" former collegues (and probably me too).
If you are heading towards research, then print out a list of NIH funding and try to go to one of the top ones. Otherwise, go where you will have fun and make good friends. Training will rest a lot in your own hands. Later.