I chose Columbia. I also had NYU, Minnesota, and UIC (state) to choose from. I withdrew from my other wait listed schools, other interviews, etc.
Before interviews, UIC was my top choice. My interview went well at UIC, but the day itself was disappointing. I didn't feel like I learned a lot about the school and everything it offered compared to other interviews. Other schools really sold their school significantly better and it was just too big of a gap for me. They're also in the middle of switching to a PBL curriculum. While I can't say whether or not I prefer traditional or PBL more, I was a bit hesitant about being the first class or so with it at UIC. UIC is also one of the most expensive state schools. While UIC was a little cheaper than Columbia, I was told that the tuition is going to increase much more significantly EACH year than Columbia is likely to.
I really liked Minnesota a lot. They talked a lot about research and clinic during the day. The interview itself was a the hardest of all the ones I did. It's very structured and Q&A. Very situational based questions and you have to answer in a certain format with bullet points or something. I was very impressed with their school.
NYU was huge. Interview went extremely well. Very long tour. Purely a back up for me
Columbia overall seemed to be the best fit for me. I tried to like UIC, but I almost felt I would be going in blind. Minnesota has a nice campus and I really liked their school. I was surprised since I thought I did terrible in the interview. But I liked living in NYC more than MN, and I liked the school more as well. I forgot what the financial comparisons were for UM vs CU.