Concerning a red wine, I can highly recommend the Cabernet Sauvignon from Alexander Valley Vineyards in Sonoma County. The good folks there have been making an affordable, quality Cab for many years now. In fact, this is the red wine we served at our wedding several years ago and everyone loved it. A price check reveals it's about $19.00 a bottle at our local Total Wine & More location. So it may be a bit north of your budget....but it's worth every penny.
And I can also highly recommend a visit to the Alexander Valley Vineyards winery located in the valley of the same name north of Santa Rosa (STS). We have been visiting this winery for many years now and have always enjoyed their tasting and tour.