Being an engineering student myself, I don't quite understand how you got into PSU and not drexel. PSU is Ranked within the top 20 engineering programs in the country. In comparison, drexel isn't much to sneeze at. Have you been drexel? I myself, and many others I've talked to did not like the campus or location at all.
Like mentioned above, Bucknell, is a good school, as well as Lehigh, and Lafayette, if you've got the qualifications. The greek life at Lehigh is crazy. If I remember correctly its almost, if not over, a 50/50 split of greek/nongreek. As a result, I'd imagine it's far from dry. It's a nice campus, and the engineering facilities are amazing.