I mostly play home games, but visit the Commerce on the rare occasion I intentionally visit LA. Also will visit the Tulalip north of Seattle now and then. There's a few players at one of my games that go to Portland semi-regularly to hit up the bar/club games. I've never gone with them, but I lost track of stories involving bad players and huge pots..
I'm afraid I don't have any specific recommendations for the Portland area, but I'll try to catch some names at the next game.