Well, from what I know and have heard around, UIC is a very benign program where all the residents truly seemed happy. The training is solid, attendings are excellent, as is the teaching there. I've heard, albeit second-hand (but from a couple of sources) that Rush has a reputation for being more malignant--they really work you. More cases=more money attitude. A couple of people that trained there have said they wouldn't do it again. hope this helps.
I hate this stress of last minute dilemmas!