Kinh Do is a notch above your average unidentifiable pan-Asian joint. I found the service to be friendly and prompt and my food arrived quickly. The ambience is decent---not quite a strip mall buffet, but not classy either. They have a huge selection of vegetarian dishes (many of which may or may not contain fish/oyster sauce, so make sure to ask) all of which are stir-fry variations on mock duck or tofu.
I had a mock duck with cashew nuts. It was fairly tasty; I liked the sour-tart flavor added to the mix by the banana peppers, and I appreciated the large portion size. But the mock duck wasn't cooked very much and must have been dropped into the wok straight out of the can, which is typical of most places that serve mock duck, but disappointing every time nonetheless.
Another downer: no brown rice. Why is it so hard for places to serve brown rice? It's healthier, tastier and, these days, roughly the same price as white rice.
Kinh Do seems good for take-out and attracts regulars. I like their hours and their location but, in terms of food, I'd rather go to Evergreen or Jasmine 26, which are fresher, more unusual and have a personalized touch.