Also still waiting to hear back from a few other schools, but seriously considering Penn. I wish that all the schools were consistent in the manner they send out acceptance/rejection letters because I hate seeing that other people are receiving some of their responses via postal mail while others are recieving them via email. So far, I've only received emails, but I'm afraid that some of the responses are slow in getting to me because they were sent via snail mail.
So for those of you that are 100% certain you're attending Penn, what was the deciding factor?