Your top 3 winery visits in Sonoma

Turbs thought this was worth mentioning said

Husband and I are visiting SF for our anniversary in mid April and have set aside a day to visit Sonoma. In the last year we’ve taken private winery tours in the Willamette Valley (Colene Clemens, Adelsheim, De Ponte) and the SLH (Odonata, Hahn). We’re not doing a private tour in Sonoma so I’m hoping you experts can give us the best 3 or 4 wineries to hit in Sonoma. We’re definitely not looking for the big boys, hoping to taste and buy stuff we can’t get in Texas. What are the little gems we can’t miss?