I interviewed at all Chicago programs except Loyola and will give me 2 cents from interview experience and second hand info.
In my mind U of C, Rush, and Northwestern are clearly the top 3. Which is No. 1 really depends on what you are looking for. I am trying to figure our how to rank them and am having a hard time figuring which I like better. They are all excellent programs and I would be happy at any of these. I will try to list some postitive and negatives below, but remember I didn't rotate at any of these so this is my view from limited exposure. I have listed these in no particular order.
Northwestern traditionally interviews mainly rotators with a few non-rotators (I was told 5-15). U of C doesn't favor rotators any more than the average program, and Rush does accept some non-rotators.
Rush probably has the biggest names and is huge in sports, joints, and spine. cover the bulls and sox, but residents probably not much involved. 4 residents per year, but tons of fellows. the knock on Rush is that the fellows can get in the way of residents. however, the residents I talked to denies this (who knows what to believe). Rush has tons of basic science and clinical research opportunities if that interests you. Chiefs get great fellowships. this years chief class is sending one to MGH for sports, one to stedman hawkins for sports. Trauma is a weakness as Rush is not a level I. they do spend 2 months each in the PGY-2 and 4 years at Cook County (busy level I). as a result, they are home call all the way through when at Rush.
Northwestern has 9 spots per year, but has tons of rotators (40-50). nonetheless, if you rotate there and get an interview (most do, but some don't) your odds are pretty good with only 50 interviews for 9 spots. they have NO fellows, which is a definite plus. Northwestern is a level I, but not very busy as it is located in the best/richest part of chicago. they do go to Cook County for Level I trauma for a few months in the PGY-4 year. Sports is a strength. residents say that they have excellent experiene in scoping. their docs cover the bears and cubs, but residents don't have much involvement. Weakness would be small amount of clinic (1/2 day per week). Otherwise they are in the OR the rest of the week, but as northwestern is a private hospital with private docs, there suppossedly is a lot of watching/retracting in the first few years. Nonetheless, they operate a ton and are supposed to have very good technical skill by the time they are done. Not much research, clinical is available, basic science is almost nonexistant. Conferences are suppossed to be very good with intense pimping of junior residents. There is a Saturday 2 hour conference each week.
U of C is a smaller program (4/yr) with very few fellows (tumor and possibly joints). The chairman Simon is huge in tumor so that is a definite strength. they work on a mentorship approach with the resident working one-on-one with an attending for most of the rotations. daily conferences at 6:30am that are suppossed to be very educational. again weak in trauma as U of C is not a level I. They go somewhere for Level I (but I don't recall) for one block in the PGY 4 year (I think). seemed like a very collegial atmosphere between residents and attendings. Residents are very happy. Lots of basic science research opportunites especially in tumor. besides trauma, very well rounded program.
all are great programs, hard to say which you should rotate at. Rush requres your Step I score to apply for a spot. Probably shouldn't bother rotating there if you don't have a high score as they seem to be very much into numbers. They actually had a list of all the applicants with there Step I score and whether they were AOA.
You must also apply to rotate at Northwestern and need a LOR. they don't seem as much concerned about numbers/AOA as most of the people I interviewed with were not AOA. No idea about applying to rotate at U of C.