I'm choosing between Chapman and Northwestern, also Screenwriting MFA, also kinda tough. Haven't received much help from others' suggestions, because everyone is talking about how personal writing is, and indeed it is.
I guess UCLA and Chapman are pretty different when it comes to style. One perspective that I think helpful is to choose the place that has similar temperature with you, that way you would feel more comfortable there.
I heard that UCLA is more experimental? Don't know if that's true. While Chapman gives you chances to work on a production team, and I assume by looking at the curriculum, Chapman doesn't coach you much on the specifics of how to write a screenplay; but let you make progress through practices and discussions with your fellow students. That's a vague assumption.
After all, I think "what you need more" plays the essential role. And also follow your instinct.