When founder Al Brounstein used to host what we would now call wine club parties at Diamond Creek Vineyards, he wouldn't serve any Diamond Creek wine. But he would, however, offer one lucky person the opportunity to buy a magnum through a lottery. While his son isn't nearly as stingy with the precious juice, Diamond Creek Vineyards still isn't exactly the type of place you roll up to and hold out your empty stemware. (It is California's first exclusively Cabernet Sauvignon estate vineyard, after all.) But it's worth the cost: The rambling Napa Valley estate includes the three famous vineyards as well as a meandering natural springs. And the wines, well, they speak for themselves.