I can only comment on the Pitt research aspect; I've been working in research there for the two years since finishing undergrad. In my experience, I would say that being a former Pitt student doesn't mean a lot when landing a research position there. Being an expert in your area of interest is what will get you in. For example, all of the postdocs I've worked with are from the other side of the country and the other side of the world. If you are only looking at research further along in your career, I would suggest going to whichever school you think you can succeed at for the next 3 years. The success you have in your career after school is going to mean more than anything when it comes to research later on (that, and "connections"). If you are looking to do research while in DPT school, however, I'd say Pitt has a lot to offer if you can land an opportunity there (the staff tuition benefits are helpful too!).
On a side note- I'm jealous that you've heard from Pitt, hah. If you don't mind me asking; when were you compete, and when did you hear a decision? I am sitting on another acceptance but was hoping to hear from Pitt before the other school's decision date.