Greetings fellow chowhounds, as this is my first post, I will start with a bang and recommend Tacos Veloz. This tiny shack is on Buford Hwy (across from Little Szechuan), although I'm told there are 8 other locations. The only thing I've tried is the burrito barbaresco--chewy warm tortilla, exquisitely tender slow-cooked meat and perfectly seasoned. A small amount of cilantro and raw onion for complementing the meat.
Furthermore, true to its name, they have a drive-thru! Let me know what others think.