I have to say our second time around in Sonoma might have been better than our first during our honeymoon. Since we hit a lot of Vineyards the first time we decided to take it easy. We only hit two wineries (one a day) but they were incredible. The first was Kunde Winery with a tour lead by a descendant of Kunde. We scheduled the regular indoor tasting but decided instead when we got there to do the hilltop tasting which is totally worth it. First we explored the wine caves and then our guide lead us on a bus up the hill overlooking all of Sonoma where he began the tasting. It took a little over three hours so we decided to just not do another winery that day. We discovered it is better to just do one or maybe two in one day.
The second winery of our trip was to a more private estate called Repris. Repris is up on a mountain top with windy roads. I recommend taking a cab there because the Sonoma cabbies know where it is and UBER drivers tend to get lost. I didn't think anything could have topped Kunde, but this was truly amazing! They only do a few tours a day and we were lucky to have a completely private tour! Our guide Logan took us in an ATV on a hilltop through the vineyards then lead us through the wine caves. At the end he had a wine and cheese set up with a menu with our names on it. It was a fantastic personalized experience. I highly recommend both wineries, and to stay away from the touristy ones.