I am going to be in San Francisco for the weekend, and I am looking for a couple of ideas for impressive restaurants. Can you give me some suggestions/examples? I like the idea of Prix fixe, but I'm not bound by it. I definitely want fine dining, but I'd prefer it not to be rediculously priced. I do live in Boston, so I understand that you pay for what you get. I'd like to be somewhere in the 85th percentile or higher of restaurants, if that makes sense.