We will be making our second trip from Florida to the wine country in mid August. We stayed in Glen Ellen the last time and randomly stopped at tasting rooms. We are staying in Napa this trip and would really prefer to have a plan of attack for our wine tastings. Does anyone have any suggestions for "don't miss" stops in the Napa, Sonoma and Rusian River Valleys? We are equally as impressed with interesting tour experiences as we are quality wine. For example, we very much enjoyed the Domaine Carneros tour which explained in great detail the process of making sparkling wines.