If you work in Ballantyne and want a reasonably priced, quick, and tasty lunch, you need to bring it on down to the Kwo. I go here about once a week with some of my co-workers and we enjoy it every time.
The folks here are friendly and very accommodating to special requests. If you want it hot, tell them and they'll crank it up. If you want steamed rice instead of fried, just let them know and it's done. Just order it up at the counter, have a seat, and they'll bring it out to you with utensils and all the sauces you need.
The lunch menu is full of really reasonably priced items, ranging from 6-8 bucks. I've had a lot of the items on the menu and they are all pretty tasty. My favorite is the Kong Bo Chicken. If you don't like the heat of the Kong Bo, I suggest the Moo Good Gai Pan. Whatever you choose, you'll get a nice portion complete with rice and an egg roll (or spring roll). It's enough to send you into an afternoon food coma.
This is a great little spot and I recommend giving it a try if you're in the area!