I think that the vineyards that sell to a larger number of wineries will be more likely to make most peopleās lists simply because of familiarity and because a higher number of producers of the fruit increases the opportunity for someone to excell in any given year.
Shea, Freedom Hill, Temperance Hill, Hyland, etc.
And a lot of smaller/estate vineyards may not be thought of as a āgreatā vineyards due to producer recognition, i.e. John Thomas vineyard and Clos Electrique vineyard.
Bigger vineyards often also enjoy an advantage in that if a vineyard that produces 150 tons of fruit going into 100 fermenters, there is a wider range for luck to play a part. The best fruit almost always makes it into a terroir based bottling but if 90% of the fruit goes to the WV base bottling is it really a great terroir?
And at some point it is subjective. I have a lot of respect for Dick Shea, and both Blair Trathan and Chris Mazepink made phenomenal wines from the vineyard (IMO), but the typical Shea bottling isnāt my own personal preference, nor am I inclined to subjugate my opinion to reviewers such as Harvey Steiman or RP as they just seemed to prefer bigger is better (again IMO).
That said some ideas(I am sure I will miss some obvious ones):
Eola Amity Hills:
Cristom-Marjorie (the single highest number of smashingly great Oregon PNs in my experiece come from here.)
Cristom-Jessie
Bethel Heights-Flat Block and SE Block
Lewman Vineyard
Temperance Hill-West Field, Upper Bench, North Block
Sojeau-(see Walter Scottās bottling)
Ex Novo (unquestionable GC Chardonnay site)
Seven Springs
Honorable mention: Le Puits Sec, Bjornsen
Ribbon Ridge:
Brickhouse
Ridgecrest
Beaux Freres
Patricia Green-Wadensville and Etzel for sure(Jim can fill this out)
Whistling Ridge
Dundee Hills:
White Rose
Thomas
Clos Electrique
Abbey Ridge
Worden Hill
Maresh
Arcus
Knudsen
Tualatin Hills AVA:
Bednarik (for sure)
Cancilla
Cherry Grove
McMinnville:
Four Winds (Chardonnay)
Meredith Mitchell
I think that a number of people would put Freedom Hill on a list of best terroirs, and in the past 10 years, the wines from PGC, Kelley Fox, and Walter Scott make a strong argument. In the old days it tended to be foursquare and tannic, but current farming practices really seem to have the quality of wines moving up very high (as do the winemakers the vineyard is pairing with).
This is a list that is highly limited by my personal experience, as I donāt taste widely throughout the valley (though I probably taste more OPN than most).