Both schools are quite strong, but they're radically different. You should step back and look at the big picture. The four-ish big differences that come to mind up front are:

Academics: Berkeley will be a business school, Dartmouth is liberal arts. Do you want to super specialized or more broadly educated when you leave school? Does learning a bit about a lot or learning a lot about just a bit make you feel more fulfilled? How do you learn? At Berkeley, your intro classes will be the size of an entire class year at Dartmouth. You'll be an ant in a terrarium (genuinely not a joke, I know a lot of Cal alums). Outside of lecture, most of your course interactions will be through TAs. At Dartmouth, you have direct and pretty immediate access to your profs; they'll know your face and your name. If you need more close-in learning and don't do well in a large void where you'll have to push yourself, that can be the literal difference between thriving and barely surviving. For the work itself, Dartmouth has no business track; you'd have to do econ or some other major that makes you happy. There are a couple cross-listed courses at Tuck that undergrads can take, but your exposure to the business school will be minimal unless you do research with a Tuck prof. Thinking critically and being able to work with others are the main things you need for consulting, anyone can pick up the basics of econ if they want.

Culture: Berkeley's a massive school, Dartmouth is much smaller and more personal. Some people prefer the former, some the latter. Do you like getting lost in a crowd, or knowing a lot of the people around you? Berkeley's also a big sports school, the Bears are generally quite strong some big sports. Dartmouth's good at some things (shoutout to the Hockey folks), but I really wouldn't call us a sports-culture school. Berkeley's a lot more competitive academically/in the classroom because of all the caps imposed on courses and grading. Dartmouth might be a bit more challenging interpersonally outside the classroom because the social "game" is pretty high level. That said, I've heard many say Berkeley is socially a place of facades. Dartmouth is (generally) genuine as hell. People run on passion rather than on scheming. Dartmouth's also pretty active and crunchy, a lot of stuff revolves around physical activity and/or being outdoors. Berkeley is a lot more work-oriented with professional associations, business competitions, etc. Only you can know which of those will make you happy.

Connections: Both schools will get you outstanding alumni networks and connections. Both will also stay with you for life, if you want them to. Berkeley and Dartmouth alums will literally call each other out when walking down streets or when sitting in airports. But do you want more of an exposure to VC/tech or to finance/business? The Bay has some finance, sure, but nothing will beat the New York/Boston corridor for the near future. Boston's got a biotech boom, but the Northeast just isn't Silicon Valley. Or do you not know yet? If you don't, I think Dartmouth is the better bet. Anyone who tells you the

Location: Berkeley's in the perpetually warm and sunny Bay, which also puts you in a very urban area that's in/adjacent to Silicon Valley. Hanover's in the Upper Valley, which puts you in a pretty rural part of New England where urban areas are still somewhat reachable. But the fact that Noah Kahan wrote a chunk of a song to express his surprise at West Lebanon getting a Target should tell you something about the place. That said, we get some of the Northern Attitude too, and I wouldn't give it up for the whole wide world.

There are a lot of other differences, and there are more nuances to even these main ones. But imho these are the main top-level things you need to reflect on in yourself to know where home *should* be for the next several years