Well thanks everyone for your thoughts. I'm leaning towards Penn and I'll offer this little anecdote as justification.
The other morning, my boss, an executive director of a small nonprofit, asked my how my school decision was coming. I told her I was torn between USC and Penn and was having a really tough time making a decision.
"Well, it's Penn, obviously. My son is finishing his MBA at Columbia and blah blah blah..."
This is my fear with accepting USC's offer. I know Price is good, but do the folks for whom I'll be interviewing in a few years know that? Yes, I'm probably insane to turn down a fully funded offer in SoCal to take on considerable debt in Philly, but I really think finding an east coast job will be easier as a Fels grad than a Trojan. I could be totally wrong, but that's my hunch.
Thanks again guys, I really appreciate it!