Northwestern and UIC are nationally respected programs. I loved NW's pd. People I knew in Chicago thought okay of Loyola and Rush, but those are local reputations only.
FWIW, based on nothing objective except reputation:
I believe the zeitgeist around University of Chicago is "avoid it like the plague." Reputations are what they are, whether they are based in any present reality or not. The department has reputations for mass exoduses, near collapses, and the last conversation I overheard about UC was whether it was even still ACGME accredited or not. I have not been able to find anything that says they lost their accreditation, but you probably are not going to hear that sort of gossip about NW or UIC.
It's also good to note that reputations are frequently based on the state of a program 10-20 years ago. It may be a lovely program now and it continues to be severely punished in reputation for no good reason. Parts of Hyde Park are pretty nice, it's an excellent academic medical center, and Chicago is arguably the most underrated city in the US. So it might be a total bargain program and the rest of the world might be missing out. Who knows.