A relatively new winery, and one I'd never heard of, had a small table at the Livermore festival in the tent where they put the smaller, newer vintners: Longevity, a play on the name of Phil and Debra Long, the winemakers. They had by far the most impressive wines I tasted that day.
They specialize in dense but incredibly smooth reds (their Chardonnay wasn't too doggone bad either). The Cabernet was impressive – mouthfilling, smooth and edgeless, with a long, long finish. They also make a Bordeaux-style blend that is very successful. I ended up buying an assortment of their wines – and to emphasize how good their wines are, these are the only wines I bought that day! I could not recommend too strongly that you go out of your way to find and try Longevity wines!
For information about the winery, go to this Danville information page: http://www.danvilleareachamber.com/business-directory/longevity-wines-inc , which gives the address and the tasting hours (weekends noon to 5pm). See if you can get them to ship you a bottle or two. Their wines are priced in the $35 range. Worth double that, easily.