Got a little of everything but guess I'd have to say I'm a Ruger guy. American made and I think delivers the most bang for your buck. Also dynamite customer service.
Revolvers - Ruger without a doubt. I prefer their designs, inside and out, to any other brand. But aside from the Charger and Mk.II I can't bring myself to care for any of their automatics at all... including the Mk.III, too many useless features.
Automatics - the classic Sig-Sauers. Not that I'm allergic to Glocks or Berettas or anything..
Glock just because it's what I end up actually carrying and shooting the most.
I originally got into them because of the grip angle.
I'm still in love with my 20c I bought a year ago, and I IWB carry it daily. Got a 23 since, but still don't find the feel of my 20 any more troublesum.