Coming from the Vietnamese food-rich haven of Southern California, I've been fortunate to have eaten amazing Vietnamese food.
This place does serve authentic Vietnamese food, but the quality is sub-par. I ordered a large and the meat portion was exactly the same as my friends who ordered a regular size. In fact, the only difference was that there was more soup and the bowl was bigger. The noodle portion was just as small!
This place does the job, but it wouldn't survive in the SGV or OC down in southern California.