What are the best wineries in Napa Valley?

Answer:
There's no way to be totally subjective with my response, so I'll go the touristy route. If you are a tourist you have to go to Opus One, Sterling, Coppola, and Beringer.
First answer by Mrkbh. Last edit by Mrkbh. Contributor trust: 686 [recommend contributor recommended]. Question popularity: 2 [recommend question].