Organized as part of our Wine Experience stay at the Herzog estate Karen gave us a great half day tour. My wife is not a great Sauvignon Blanc fan (thankfully not total sacrilege) so it was fascinating to see what 4 wineries were doing with alternative white grapes like Riesling, Chardonnay, gewurtztraminer and Pinot noir.
Karen was a great guide and very knowledgeable, but it was also great to see her buying some bottles too.
I would thoroughly recommend this company to provide a really great tour. Ours was by vehicle, but I believe the majority of Karen's tours are by bike which I think if I was physically able, would be a great way to see the wineries.