going to san diego for the first time, staying for 5 days in the gaslight (?) district and will have a car. will be coming from a few days of very high end dining in sonoma and so am hoping for something more relaxed (and cheaper) but do want to experience some of what locals might call authentic. enjoy all kinds of food but, again, nothing too staid or mannered. also willing to travel out of town. your help is appreciated.