Again, I never said the only good hospitals were at Harvard, JHU, UCSF. Just that these are places where, in general, there is the strongest training--both in terms of research dollars and clinical volume/complexity. The clinic hospitals (Mayo, Cleveland) are fantastic institutions, but their focus is more on healthcare delivery and less on research. MD Anderson is famous for cancer only, and let's be honest, Cleveland clinic is is famous for cardiology only (and their chief of cardiology comes from Hopkins, lol). Sigh, I don't know what you have against BWH, I was only saying that it is considered one of the top four IM residencies. If you don't like it, then by all means, don't go there. No need to get so worked up over it.
As for me, I don't want to go to either Mayo or MD Anderson :/ Mayo doesn't attract me in terms of their breadth or depth of research, and MD Anderson is too limited in scope for the specialty I am pursuing. Most likely I will stay at one of the flagships. <3