There's nothing better than getting a delicious and fresh sandwich from Weingerger's! My personal favorite is the california Club. It's so good - especially the Sauce they put on it.
Everytime I have been there, the owner is so friendly and staff is, too. It can get crowded and seating can be limited, but thats the only issue I've ever had.
They make great sandwiches that you can't get anywhere else in DFW!