I've had Estancia and cloumbia crest, tasty.
My pick for the $6-$7 is the '06 BV coastal estates cab, it's a nice mix of napa/mendicino/ and if I remember right.. paso robbles
great for drinking right away.
I have a friend who bottles his own from various vinyards, its a cab franc that really blew me away..cab/merlot very very good, he wont tell me where exactly it comes from though...yet at least.lol
On the other hand, my uncle who is a wine buff bought a lot of french 'and others' cases of wine back in the early 80's, so we bust out the '83 vintage chateau pauliac a couple times a year for the hollidays...EXCELLENT!!!
Then there is the '66 he has.....chateau latuor I believe and some others.