I was just in your shoes deciding between Pitt and Chatham and it was SUPER stressful.
Here's my advice-- make a spreadsheet of everything-- prices, class size, start date, end date, number of clinicals, range of clinicals, pass rate, accreditation, research/other opportunities, etc. Everything you can possibly think of...
Then, if it's possible ask as many practicing PTs as you can- ask them if they know of either school/what they've heard. Getting as many viewpoints as you can is really helpful. I also suggest calling each school to find out about financial aid options (other than student loans).
Once you get really into your research, you will start to be able to see the pros/cons of each and make the best decision for you.
I literally was sick every day for about a month and now that I've decided I feel a million times better and finally excited about school!