This is entirely a personal decision: Coke or Pepsi? Do you cheer for the Lakers or Celtics?
It's the kind of thing where the more you analyze, the more indecisive you will be. Trust your gut on this one. Every person in your shoes will choose differently, and will have their own personal reasons for doing so.
It's really a matter of your own risk appetite. If you were to ask someone who races motorcycles, goes to Vegas at the last minute on a weekend bender (without telling the wife), and has started a venture capital firm in Vietnam (and contracting malaria in the process), chances are he would tell you "f*ck it, grow some balls and take the risk."
Conversely, if you were to ask a tax accountant who double checks his grocery receipt to make sure the computer accurately calculated the taxes (and would complain if it was 10c off), then he'd tell "don't take the risk man, you never know, safety first!"
This is a decision only you can make, and anyone giving you advice is only projecting their own risk appetite, which really has little to do with your own.
Also, it's not going to be the most important decision of your career, unless you assume your career is going to be on a linear cruise control that is only a direct consequence of your decision to go to one b-school vs another. Trust me, it won't work out that way, no matter who you are. Who you are and what you do in your 30s and 40s will have little bearing on what you felt like in your 20s. It's not a big deal.