I don’t think recommendations are going to be random if they’re given by experienced drinkers.
Of course they will. You can look at any list of wineries in WA and come up with all of the names that have been and that will be mentioned on this thread. You already have Grammercy, Quilceda Creek, Seven Hills, Betz.
What’s the difference between them?
Well, Grammercy is known mostly for Syrah and Rhone grapes, although they do indeed put out Cab and Sangiovese as well. But if you’re looking at them, why not go with what they’re really passionate about? Quilceda Creek is oaky, uber-ripe, sweet, and to my palate, similar to something like Caymus. It just costs more. Seven Hills may be the value pick of this little group, as even their higher-end wines aren’t ridiculously expensive. They’re also pretty straight down the middle, not super oaky or super ripe. Betz is probably the most reminiscent of a well-done CA Cab, balanced, clean, ripe without being overdone, and priced somewhat less than you’d pay for the equivalent in CA.
And nobody yet mentioned Cadence or Andrew Will, which surely are among some of the most Bordeaux-like wines out of WA. Eventually someone will mention Leonetti, Dunham, Woodward Canyon, Long Shadows, Januik, Novelty Hill, DeLille, L’Ecole No 41, Chateau Ste. Michelle, Charles Smith, Buty, Hedges, Cayuse, Bookwalter, Robert Karl, Barrister, Arbor Crest, Claar or a dozen others. And Foxy Roxy - their Vixen Red is a Bordeaux blend.
So you end up with a random list of names that people name as their favorites. All at different price points and styles. I could give my impression of each of those as well as some others, but without any idea of what the OP likes, wants, or knows, what is the point, other than to create a list of wineries? And what would that list be other than something random?
Thus, my advice is to simply try some. And to branch out in case he doesn’t like what he finds.