I have to admit that I haven't had a lot of items from the menu. I've eaten here for lunch many times, but usually ordered the lunch special.
In particular, I liked the Kung Pao Chicken. It's not Vietnamese food, but it was very flavorful and the price is good. I've had several other items that are good, too.
What stands out is their egg rolls. They are the best. Literally, the best I've had. Sometimes I'll stop by when I'm in the area just to get them to go.
Give Vina a try. As one reviewer said, it's not authentic Vietnamese food, which I won't debate, but it is tasty and their prices are in line with other Asian restaurants (and their lunch specials are great).