Bun Thit Nuong on the cheap, centrally located too.
I was not a fan of Miss Saigon's pho soups but their bun thit nuong was worth a shot, with thinly sliced pork and the required herbs and lettuce and noodles to boot. Easy to access from the main shopping area, and right off the BART.
100 6th St, San Francisco, CA 94103, USA
Sat, Sun 12pm - 9:30pm
Mon - Fri 10:30am - 9:30pm