I think I probably have a much better chance at MIT than any of the schools I'm applying to (because of my engineering background and quite a few people from my company got into MIT who are engineers with similar backgrounds), but I really didn't like the campus nor the business school area when I visited this past April.
Oh yeah, for those of you visiting, BE CAREFUL of the cab rates from Cambridge to the airport. There's some stupid rule where if you're going to the airport from anywhere other than Boston, it's $45 + tip or something like that. I went on a business trip, so I didn't care, but it would suck for those of you paying out of pocket. Just a warning.
Harvard campus is GORGEOUS... too bad I have no interest in applying there either...