If you are not sure what you want to do after graduation, I would go to Duke. It makes no sense to go to Booth, take on the debt to go find yourself when you have a school that is in the region that you want to end up in.
Yes, Booth has advantages in certain industries like finance, but if you don't know what you want to do, you will likely be exploring different industries and roles and that is not going to get you into some of the more competitive industries that Booth will give you access to. To get into those industries, you almost have to have laser focus.
My point is most likely you will not reap any of the advantages that Booth has over Duke, if you are not even sure what you want to do. On the other hand, at Duke you will have the opportunity to explore different roles/industries and have greater access to the South and ultimately, for less money.
In my opinion, the Booth brand is not strong enough to overcome the issues I have outlined. On the flip side, the Duke brand is not too shabby either. This is not College of South Atlanta or something we are talking about here.
Don't buy into the brand thing too much especially since you are not clear about your future goals. I think that for someone who wants to explore and wants to end up in the south, Duke is offering a better deal.