@quanttrader - maybe the CMU scholarship is a signal; you're the first I've heard getting 75% - I've heard 25% max in the past for a top candidate. That means they've identified you as a top priority for the program, which puts you at the head of the queue for the networking, professor connections. When their top industry contacts call and ask for the best student, most schools have 1-2 "go-to" candidates. At least, this was my experience when I went to a low/unranked MBA but was the top student and ended up doing quite well after. CMU is not a low ranked program, but it sounds like you'd be "a big fish" there. There's something to that.
UCB MFE has a solid reputation, as you know. I like that they've increased their pre-req requirements, which means their data science offerings will be more serious. Adjuncts there are pioneers in quant equity investing - think blackrock, Axa Rosenberg, Barclays out of the San Francisco office.
Princeton more theoretical - the program was started by Ben Bernanke when he was there and I kind of think of it as central banker training school. The princeton network, and ivy league prestige are no joke, to
@Soccent 's point. CMU was my top choice, then I read more about the Princeton program and found an unbelievable amount of cool stuff there. If you know exactly what area you want to specialize in, or consider a future PhD, or really like macro forecasting Princeton is tough to beat.
CMU has a more focused course plan, one that seems closely aligned w/ industry. If you're not sure what area you want to get into, then CMU might be the better approach because you'll get a broad, solid foundation in quantitative finance. I can say those interns I worked w/ from CMU, both grad and undergrad, were several standard deviations above other schools. The computational training seems top notch.
Another way to think about this - technical skills are more important earlier in your career, so the initial "bang for your buck" might be more out of CMU. Princeton may prepare you more for the long game, when you'll need to formulate the investment thesis rather than implement it. But it could be challenging out of the gates if you don't have the programming skills to implement.
Alumni interviews are probably your best source of information. More important even might be defining what you want after the program.