I've had the pleasure of working with someone from upenn – an architect, but I think this was undergrad and had major in engineering. This person is at the top of the game. If they are a reflection on teaching quality then I'd recommend. Good luck with studies

I believe Penn still works with a pretty "digital design" (though that's probably a terrible way to describe it) focus, which some people might find off putting. While it seems to me that's GSAPP has moved away from that type of stuff. Well not that it was necessarily ever doing it but you get my gist. In other words try and find some recent student work on Issuu or even superarchitects or the like. Assuming financials are the same for each you should try to see which professors or pedagogies each school might offer you. Especially if you are interested in academia. Sorry for the rambling comment

Penn and Columbia both gave me the same scholarship, this is going to amke it an even harder choice... plus trying to leverage more money....