This review is for 3.5 stars.
Nothing bad to say about Kinthai, I just have to compare it with the plethora of other Thai restaurants in the city and it wasn't in my top 5.
My meal was tasty, spicy, and very fairly priced. I had the stir fry with pork and the larb salad. I got mine extra spicy, and it sure was. They do a 1-10 sliding scale; I got an 8 and it was an eye rinser - delicious and deadly. The outside and the mall outlet it's in are a little run down, but the restaurant itself is very nice and comely.
Kinthai is a solid option if on this part of town. They have a great $7 lunch special which I would recommend, actually. But in a town full of outstanding Thai restaurants, I'm going to play the field.