I still haven't seen the "FW" in the original question, nor the "Arlington," "Southlake," or whatever other 'burb has been mentioned, but I digress.
Who's Who is a damn good burger. It's my favorite du jour, but that's subject to change at any time. I like their fries and love their rings. I don't get the Kobe because it tastes the same as the regular. I live three blocks from Burger House, so I eat there often. That sorta takes the "greatness" out of it. Never liked Ball's that much. Keller's is greatness. So is Jakes. Surprised to see no mention of Joe Willy's yet; pretty decent burger there.
As for burgers in the 'burbs, Country Burger in Plano is pretty damn tough to beat. And for a quick burger with great taste, I'd take Burger Street over any other fast-food joint in the nation . . . including In 'n' Out.