to whom are you directing the question? To the hundreds of anonymous board lurkers, virtually none of whom have ever been to either pittsburgh or chicago, much less set foot in either hospital or department, having zero knowledge of any of the particulars of either program, and none of whom have the least bit of insight into your circumstances, priorities, and professional goals? Is that whom you seek to guide you?
Not trying to be a dick, but it's unlikely that answers to such a question will help you in any meaningful way with what is, ultimately, a lonely decision that will likely be based on emotions and gut reactions, moreso than any facts the departments can give you or prattle you'll find on an anonymous message board.
Search your soul. Use the force, if necessary.