For daily drinkers, I think it's hard to beat Costco's wines. Another nod to my Costco obsession. I don't really drink much of them, because we're trying to drink less, but better wine, which is going pretty well. For a nice, reasonably priced Cab, it's hard to beat Honig and Jordan. Beltane Ranch is a little winery out here that makes really good, reasonably priced zins and roses.
NOTE: sorry for the alcohol post right after your request, Riffraft. Hang in there: I just finished 12 dry weeks--wasn't that bad. Wish it was as easy to give up refined sugars.