I go to NU undergrad and have spoken to many med students from the school downtown. I am sure you know the curriculum it is total PBL, which gives the students plenty of free time (most of which is a good time to study and review), a chance to cooperate and learn together rather than to compete, and I think a great way to learn medicine (my only qualification to say that is my study abroad medical program was PBL, and it made it an amazing experience).
Chicago is an amazing city, and as you saw at the interview, the school's location is perfect. There are great hospital affiliations (including Northwestern Memorial which with the $600 million addition has become one of the finest hospitals around). Their reputation is growing, and though it isn't an elite school, it is pretty damn good.
And you get the Cubs... (way better than going to Pirates games, haha)
That's my 2 cents
Simul