<p>One thing for you to look at is if the NYU and BU grants are renewable or just for your Freshman year. Will your parents income change in the next four years? If so, you may lose any need-based aid.
I am assuming that you are in-state for UCSD. Who will be paying for your round-trip airfare?
In my opinion, UCSD represents both a better value and a safer investment.
You can always go to Boston of NYC for grad school, or live there after your undergrad.</p>