Here are some West Coast Balanchine performances that I've been able to find, to sate pherank's appetite:
October: Rubies at Sacramento Ballet
December: Nutcracker at Oregon Ballet Theatre
April: Midsummer Night's Dream at PNB
May: Apollo at Sacramento Ballet
May: Serenade at Los Angeles Ballet (4 theatres)
May: Episodes / Walspurgisnacht/Western Symphony at Ballet Arizona
And not quite west coast, more inland empire:
November: Who Cares? at Ballet West
November: Serenade at Ballet Idaho
April: Div.#15 at Ballet West
Point taken, Jayne. ;)
California Ballet in San Diego is supposedly going to perform Serenade next year as well. I'll admit I tend to favor SFB and PNB due to my fear that I might see Balanchine performed badly - and that just makes me gnash my teeth. But a number of the companies you list are quite decent.
Episodes/Walspurgisnacht/Western Symphony at Ballet Arizona is definitely worth thinking about, but I would have to come up with the extra money first...