I imagine I'm opening a wonderful can of worms by asking this question. A good friend and I will be in SF for three days next week and we want the hands-down best sushi in the city. Price is no object. I went to Ame and had the tasting menu with wine pairings, last time I was in the city and it was fantastic, but it was more of an overall great dining experience and this time we'd like straight sushi and sashimi.
In LA my favorite spot is Sushi Zo, and hers is the Hump. We also love sake. Neither of us have been to Urasawa, and we're not huge fans of Nozawa, if that helps with some guidance.
I've searched the board with various key words and haven't come up with anything yet, though I recall reading about a few places that have gotten raves.
We wait excitedly for your responses!!