Haas is much smaller and can be categorized as a regional program - most applicants remain in CA after graduation. Part of it, it is hard to move to Michigan after having lived in Bay Area for 2 years, but another part of it is the network and employer reach - few large companies from Midwest or East Coast come out to Berkeley to recruit.
Haas is a great program. They are very selective and quite a proud bunch too. How well known is it in Mexico or areas you are planning to operate? What about the network in Mexico? You can try LinkedIn, though it sounds like you have already looked at what nationals and how many they admit.
Haas tends to be a "mysterious" MBA program - they admit unpredictably, have few GMAT Clubbers and feedback out there in general, and due to a very low acceptance rate seem to have a "hard-to-get" reputation. It is a more boutiquey school if you know what I mean. It has its own pros but also cons.
West coast mentality may be something you are used to or something that will irritate you... as to liberal vs conservative, both cities/schools are pretty liberal and so is Chicago but Berkeley area is on the complete left side of the spectrum, sometimes leaving even liberal people speechless
Both Booth and Haas are very international and cosmopolitan.
I think you will get out more professionally from Booth Experience but you may enjoy Haas more on a personal level. So it is a bit of personal experience vs. professional development. Depends on what you want to get out of it. Congrats and Good Luck!