Sorry I can't give you great advice, but I just wanted to mention that I am having the same conundrum. I'm trying to decide between Harris and Gtown as well... it's a tough decision. I also want the quant focus, but I want the Int'l focus as well, and it seems like Harris is better with the first, while GPPI is better with the second. I visited DC last October and it just seems like a great place to network and get involved in a lot of NGOs. Most of the students at GPPI work part time at great jobs where they can use what they're learning while going to school. I'm sure Chicago has options like that, but it will be limited for International Development pursuers. I'm attending the visit weekend to look into it further.