Don't forget about Chicago. :) I just moved here a few months ago and love it. It has it's roots in a very down to earth, "working-class" (read: butch) world. Although it's very midwestern, it's very liberal.
We have the only *officially* recognized gay ghetto (Boystown), have a slew of bath houses and sex clubs (including the one we own...the nation's oldest gay theater and sex club).
Also, you get all those midwest boys that are escaping from their small towns for a little road trip to the "big city".