UCLA or UCSD for Comp Sci?

I’m planning on majoring in CS as an undergraduate, and I got into UCLA and UCSD. What insight, comparisons, and differences regarding the the CS programs can be provided between these two universities? And which one should I be leaning more towards? I’m also factoring in the social aspect as well, so insight on that would also be appreciated.

Also keep in mind that I’m hoping to work for an established big company rather than a startup after 4 years.

Established big companies tend to recruit widely, so choice of school may matter less with such companies than with little startups (which, if they recruit new graduates at all, are more likely to recruit locally and perhaps a few selected non-local schools).