I had the best visit at Goizueta because I was able to stay multiple days (a few weeks ago). The MBA students have a KEGS tradition every Thursday, and I met a lot there. I was also able to sit in on 4 classes. During KEGS, all of the students said the core was tough due to the amount of time spent at school. If I remember correctly, they participate in classes Monday - Friday 9AM - 5PM, and then had groupwork until approximately 8PM, and, like the other schools, worked on professional development, recruiting activities, and clubs. One student said the full-time work didn't make the transition to full-time school as easy as he expected. I have to re-read the literature, but perhaps they had a less rigorous pre-core course...?... What were your impressions of Emory? Did you look at Goizueta, specifically?
Geography is a concern. If you're from Indiana, you may not mind staying in the Midwest. As an East Coast person, I have a slight tendency to cling to the ocean. No real reason, I suppose. Employment in all of the schools is easier in the region where the school is located.
St. Louis is infamous for having bad neighborhoods, and I was advised to be careful walking in unknown areas. I walked a lot, though, on two roads near the school and in the area near the Gateway Arch, and found it very beautiful. The campus is very pretty. A student said companies fly students to their offices for final round interviews, whereas Kelley students may have to pay for their own flights.
Kelley is highly ranked for student satisfaction, and it shows. Students I met said "come here" with enthusiasm. They are very happy with their professors. Marketing seems to be the most popular concentration there; they have 2 marketing tracks. If you're looking for structure plus personalization, Kelley may be a good fit.
I'd be happy to read more of your impressions, based on your visits! Sorry I can't help with Mendoza.