Ask HN: Friendly Cities?

HN seems like a community where people get around quite a bit. I'm looking for opinions on friendly cities. First a few points to try to frame what I'm asking:

1. I'm not looking for "people are people". I've lived in Boston and Seattle, and in my opinion you'd have to be completely 'deaf' not to feel the difference. My question both assumes, and insists, that people act differently in different locales.

2. Same for "people respond to you, so it's all you, man". That's deep, but for the love of straightforwardness, I implore you to save those keystrokes. Again, if you think it's all the same, I'm emphatically not addressing the question to you.

3. It would be great to hear from people who have lived in at least 2 cities / places.

4. If you're going to recommend someplace outside the US, hopefully it's somewhere an english-speaking US citizen could reasonably get a work visa. That said, there's no reason for me to hog this thread all for myself, so post away.

Thanks!