Quote:
Originally Posted by
audiophilia 
I'll be visiting Shafer, Duckhorn, Hess, Joseph Phelps, Grgich Hills and Cakebread. Any others you have enjoyed quality tastings at I'd like to know. Any of you guys have had negative experiences at the ones I mentioned, please let me know.
Cheers, a
The only one of the above I've visited in recent years, or at all if memory serves, is Hess. Beautiful grounds, view and interesting art collection; but the last time I found the tastings to be rather hum-drum. I haven't been to Duckhorn, but I have been to another of their properties, Goldeneye and it was lovely; both in terms of grounds and service.
As KW says, weekdays vs. weekends can make a huge difference. I'm guessing weekday if you plan to be in SF on the weekend fo the SF meetup

Also, with that list, I hope you are planning a few days to take them all in. Not only can the tastings add up with respect to driving, but just the time traveling from one to the next can also run over your expectations (weekends especially if that is the case). The main N-S road-- 29-- can be a major traffic jam, and Hess is a hike up a twisty-ass road. No way you could do that all in one day, but two, or better yet three.
Also, if during the week, and weather is permitting, have a lunch on the lawn at
V. Sattui. Yes it's a terribly touristy thing to do, but if the crowd is sparse, it can be a thoroughly enjoyable way to spend mid-day.