MBB plans - No real reason to choose Harvard over Booth. Both will give you the same opportunities and you'll get an MBB offer depending on your interview performance. Verdict: Booth with $$ is clear winner
VC plans - Getting into VC is pretty tough, even at truly top business schools (HSW). Its very competitive with great candidates, and personal networks can play a huge role in getting final offers. Although Harvard may increase your chances of going into VC, i'd say that actual VC likelihood will go from "very tough" at Booth to "tough" at Harvard. In my opinion, not sure the slight increase in chances is worth the extra $$, but still... Verdict: Harvard, by a little bit
Personal self-esteem levels - This can be a major deciding factor.. how do you feel about yourself currently? Are you hungry for social "prestige"? Harvard is the biggest global brand in education, and the name does carry a lot of weight. It has the maximum potential of making someone notice you, no matter where you are in the world. Booth (and U of C) has a great brand too, but not at the same level as Harvard. This will be up to you to decide - do you want that prestige, at the cost of $100K?
On the flipside, always knowing that YOU declined a Harvard offer has a certain "coolness" about it as well. You'll be in the select group of individuals who have declined a Harvard admit.

Nonetheless, a great dilemma to have. Congratulations, and good luck with the decision!!