The more I read about all of the great food, the harder it is to make a decision. My husband and I and another couple are vacationing in SF at the end of the month (celebrating both of our 10th anniversaries), and we'd like to make reservations at a couple of places ahead of time and have several other ideas for lunches and dinners. We're not interested in the super expensive places (Gary Danko, etc.), but we also want to stay away from tourist traps. All of us are fairly adventurous eaters and love seafood. So far I'm considering the Slanted Door and maybe Bistro Aix. We don't want an overly loud restaurant, but do want a fun atmosphere. We're staying in the Union Square area. Any ideas for us?