I probably have about 100 bottles of Napa Cabernet Sauvignon in the cellar, but I can usually find stuff I like for under $60 (Pride, Altamura, Chappellet, Caymus, etc.). Much more of my cellar is focused on red Bordeaux and Burgundy, but always enjoy a good Napa Cab. I'm always hoping to learn more though.
I have a collector friend who 3000 bottle cellar stuffed with Lafite and Ausone and other treasures. I asked his opinion on this and he chases all over to auctions in pursuit of Shafer Hillside Select.
Regardless of price, who makes the very Cabernet Sauvignon in Napa Valley? Who are the best five or six? Who would be the next five or six as your "Second Growths."