The roads are better, the people seem more varied, there’s even more things to do outside work, there are seasons (god I miss weather), and the tech scene is probably almost as strong.
But are there many startups? It almost seems these days more startups are coming out of Europe than out of NYC.
What I like most is the diversity in the companies. They're "tech" companies, but their business is advertising, finance, real estate, and lots of other industries. There is so much diversity here that, even if you only hang out with technically-minded people, you'll still have plenty to talk about. When I lived in SF, every person seemed to do the exact same thing but for a slightly different variation of the same kind of company.
Anyway, I'm obviously biased, but I prefer NYC to SF. The weather was a huge point for me, but also the fact that NYC just "feels" more like a city - it's incredibly dense in most parts of Manhattan, which makes it easy to walk to almost anything. Diversity are transportation are two other big pros.
I still have nightmares about those hidden pools of half frozen brown sludge that accumulate at street corners that turn your shoes pitch black if you accidentally step in one!
Are you planning to drive in Manhattan? Car ownership in NYC is a world of hurt.
Oops, I thought you said "meetups" not stuff outside of tech. I personally like to climb, bike, and visit breweries. Biking is fun because you can stop off and explore wherever you feel like.
If you really want to save, get a 2 bedroom apartment with someone. If they make >70k you will have a good amount of money for fun/saving/loans.