i'm from eugene, originally, but didn't play disc golf while i lived there (damn that would've made high school easier)... i do get to play dexter when i go back to visit family and i can say it's every bit as awsome as de la veaga in santa cruz. some of the tightest fairways i've ever seen too, mixed in with a few more open holes. great mix of shots, super challenging.
whistler's bend is also really nice. it starts out tight and finishes with some big open holes (huge top of the world style shot there too!). not as creatively laid out as dexter, though, in my opinion.
i'm visiting some family now and tomorrow i get to play pier park in portland... from the pictures it looks like it'll be sweet. plus it's 6400 ft. with only 1 hole under 300 and 7 over 400. appears to have a lot of trees, too. hope it's a good one!
my favorite courses thus far are: de la veaga, dexter, stafford lake, monterey oaks course, and highland springs (lakeport CA, designed by steady ed). they're all equally cool in my book.