Every time I visit friends in San Francisco, I must visit (usually multiple times) Pho Vi Hoa in Los Altos. It is my favorite Pho stop. The broth is beautifully clear and perfectly spiced, and the ingredients you can add are all fresh and thoughtfully prepared. If you try and go for lunch, do yourself a favor and go around 11am, cause if you wait until noon, you'll wait to be seated., Also, you are expected to seat yourself but if you're alone don't go for a booth if it's close to noon or the proprietor will give you grief for taking up too many seats!!