I'd do NYC for sure. You can get anywhere in NYC easily using public transportation, do more, see more culture, there are tons of girls there, you can get to other cool East Coast zones (Philly, NJ, Mass, etc.) fairly easily, and now there are a bunch of parks popping up there as well. I'm probably biased though, I'm not really a fan of anywhere in LA besides where my friends are in the Santa Monica area.