Since nobody else has chimed in, I'll take a stab at it.
I'm not from Portland, but my wife is, and we visit her family often. She used to take her '74 Beetle to Esquire Motors (on Canyon? Road). She reports she had very good service from them.
I had an occasion to have glowplugs replaced, injectors tested, and general work done on the '92 Passat TD while visiting there; they did a nice job, allowed me to see the car while it was being worked on, did reasonable work. I thought the price was expensive (especially after I converted it to Canadian $) but felt that the work was performed by knowledgeable and competent mechanics.
So, I would recommend them but they may be a bit pricey.