Among Booth, Kellogg, and Tuck, I chose Kellogg ($ wasn't a factor for me...). I wouldn't say my decision was easy tho.
1) I connected with Kellogg students better at the Admit Week vs. Booth students. Tuck's class of c280 was just a bit too small for me personally. Networking and meeting new ppl are high on my list, and I felt like K does a better job in creating a scene for everyone to mingle and get to know one another outside your background and/or ethnicity... I prefer to work by myself vs. in teams but I thought this team culture at K will really ground me and allow me to build strong network with peers.
2) Unlike other tier 1 schools (20 firms hiring c70-80% of MBAs), Kellogg attracted diverse employers (200 firms hiring c80% of K MBAs), opening up diverse opportunities post MBA. This is crucial especially for ppl who are unsure of their post MBA goal.
3) Opportunity to lead others: I got the sense that K provides more opps for students to lead others thru clubs, events, and etc. DAK was totally student run.. are you kidding me? DAK was ran and organized so well. I think this type of student led exp is really underestimated but sth that is extremely important wherever one is employed.
4) Well-rounded school: fun and collaborative culture, great social entrepreneurship / non-profit, top notch general management (not to mention brand mgmt and mkt), underestimated finance program (this is actually pretty sick - I was pleasantly surprised that Asset Mgmt Practicum allows students to manage $4mm, an amt greater than any other top school), solid decision sciences/operations/supply chain... and on and on and on.... I got away thinking that it is a very well-rounded school.
At the end of the day, I don't think anyone can go wrong with either B or K. It is what you make out of the MBA experience more so than which top school you attend. I would go where you feel more comfortable... Good luck!