What city to you recommend moving to in the US?

Hey guys,

I'm planning to move back to the States soon.

Just wonder where you recommend living.

I never want to live down south again, I don't like extreme weather (but it's negotiable if it's cold), I need a diverse city, and there should be public transportation!

Some that I've thought of are: Denver, Seattle (TOO EXPENSIVE), Portland, Madison, and Indianapolis.

Expense is a major concern (recentish college grad)

Hopefully your cities are awesome!