I am in the same situation and I chose Kellogg over Booth. In my view as well, Kellogg is more open about employment opportunities for part timers than Booth, just check the employment reports from last year.
Also make sure you understand the curriculum strengths of both programs. Generally speaking Booth is more quant driven/analytics whereas Kellogg focuses more on general management/team collaboration.
Finally, do a class visit and check for culture fit. I had a stronger connect with the Kellogg students and this is important. In the end, the network will play a major role once you are close to graduation.
In terms of facilities, Booth rocks! The Gleacher center is awesome whereas Wieboldt hall is a historic building. However, facilities was not high on my decision making so I ignored this point.
I can fully empathize with your situation since it is not an easy decision to take.
Akb
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