From someone else who's currently trying to decide between them, I think this is a really great thread, the comments on here have certainly been helpful in giving pro's & con's for both, and I'm sure it will be a source of hot debate!
Without having started at the college yet, or having any experience of either discipline, I think it's sometimes hard to make that decision from the outset... (I know we're only asked to state a "preference" though!)