After each of my interviews I wrote out a pros and cons list for each school. I wrote down absolutely everything I could remember, good and bad, about the program. This has been really helpful when I'm trying to make a decision.
So your schools are pretty even on some important aspects. What about funding, match rates, clinical training, mentor styles, opportunities to publish/present, TA opportunities, externships? Where have your mentors placed previous students? What about other perks? Location, general feel of department, are your colleagues friendly, collaborative, competitive, things to do in the community, cost of living, dog friendly housing. Can you see yourself living there for five years? If you're bringing a partner - what would they be doing while you're in school?
These are all things I put in my pros and cons list.