If you plan on going to Spring Mountain I highly recommend you visit Behrens family winery. We just got back today from the winery, picking up our Drinkward Peschon and sitting down for a tasting. It was one of the best napa experiences we've had. Beautiful views, the host, Robin, was fantastic and the ability to taste wine made from four different winemakers across 3 different vintages is unbeatable IMO.
Also, the 06 drinkward peschon was fantastic, if you have the ability to buy this wine I highly recommend it, especially based on how wonderful the 02 is showing right now.