I ate lunch at Pho Thanh earlier this week and enjoyed it so much, I had to try another Vietnamese restaurant to compare it to.
Over the past 2 years, I've been to Cyclo, Little Saigon and Saigon Nites, and all were good. Little Saigon was the best, but that's a review for a different page....
Da Vang has a great BBQ Pork Vermicelli. I ordered the noodle bowl with BBQ pork and ground shrimp (Bun Chao Tom Thit Nuong) and it was the best I've had in the Valley. One minor flaw: their fish sauce served with the Bun was not good. When you have a dish with such simple yet complex flavors, that can't happen in such a basic broth.
The spring rolls were average; I prefer more mint and cilantro, and without that brown meat (turkey? pork? mystery meat is bad in spring roll. Next time, I'll ask for vegetarian since I prefer tofu. My fault.) Also, their sauce was much worse than I am accustomed to. The hoisin was too sweet and overpowering.
They serve their Thai tea with a glass of ice and a 6 oz sealed bottle of Thai Tea. I don't know why I feel different about that, but I was disappointed it wasn't a concoction from the kitchen.
As others have said, this is not a place for atmosphere, however I did receive attentive and courteous service. I also have a full serving in a leftover box for dinner.
To summarize, It is a very delicious place to eat, and I will definitely go back, probably for some pho. The overall dining experience was probably 4th best in the city, but because I go for one specific dish, and they make the best I've had here, I bump up their star rating by 1 from 3 to 4.