Assorted other factors and thoughts:
I am from the Chicago area. It would definitely be easier to go to UC (speaking in terms of comfort and logistics, not academics). The weather will suck, but at least I'm used to it. :/ However, I don't necessarily love the idea of being so close to home or ending up stuck living where I grew up, and NYU is, well, in NYC, and in a much better area. Though I would imagine it would be cheaper to go to UC, housing-wise.
I don't know exactly what I want to do/study, but I am leaning toward international law, and I know that I don't aspire to work in biglaw.
I like the smaller class size, more academic-focused approach to law, and the quarter system (at least, the idea of spacing out finals and having more class variety) at UC. And honestly, I'm not that cool or fun of a person so the fact that the students are known to be studious nerds is OK with me.

If this is getting tl;dr but you nonetheless have some insight on comparisons, pros, cons, whatever between these two schools, let me know!
Edit
Just heard back from UC about financial aid. Both schools will cost me about the same.