A benchmark Napa Valley winery, Buehler Vineyards have been making some of the top value Cabernet Sauvignon from their Conn Valley estate since the late 1970s. Even Robert Parker has said of Buehler: It’s hard to find value in Napa Valley, although great wines there are plentiful. That said, Buehler Vineyards, owning their own property for years, has turned out some very well-made, moderately priced wines.