I went to college in Chicago and lived 2 blocks from CMH, and also rotated at Northwestern as a 4th year.
As someone previously noted, AM report here was one of the best I saw throughout interview season, and they make a point to get interns involved in conference from the get-go. On days when they have intern AM report, the 2nd years/seniors go to board-review sessions.
Rep is awesome, lots of great fellowship placement locally and nationally. I saw plenty of low SES kids on a subspeciality service, but can't comment on the general stuff. Great support for international rotations as a senior.
Downsides: ER is cramped and overcrowded, they know it. Mostly paper charting (progress notes on some services are typed though, ICU, Cards; its a nice bonus). Some people wont like the front-loaded schedule (intern year is noted to be brutal, but the work hard, play hard attitude exists. I don't think id mind. Intern BBQs as a first year...only place i saw something like this (sign you out on Friday nights if you are on!)
The neighborhood (from living there for 4 years) can't be beat; particularly for a young professional. If you are married w/ kids, its also a great area, although the downside: it's pricy.
PM me with specific questions!