Okay, I'm not a "grounds" person. I'm not a big producer person. And I'm not really a Napa person. But I need to take a group of six to some wineries in Napa and Sonoma Valley (not Dry Creek/Russian River/Etc. -- I have that covered) for a couple of days, one of whom is not a wine-drinker, but is a garden-lover. What places sacrifice the quality of the wines the least in the pursuit of those perfect grounds?