Duke vs Brown vs USC Full scholarship (Trustee)

No financial aid at duke or brown. Want to pursue a career in investment banking or consulting.

Completely disagree. The Duke name will open lots of doors for you. Duke is a target school for investment banks, whereas USC is not.

Proof
http://www.corporatefinanceinstitute.com/list-target-schools-investment-banking

But if I were in your situation, if finances are an issue, go to USC and save your money for an MBA