Which Burger Chain Should Move to Charleston?

It's inevitable. Some days nothing but a greasy, fast food burger will do. However, not all chains are created equal. Charleston has a Wendy's, Five Guys, Sonic, Burger King, Hardee's, and Smashburger, but what are we missing? Those who have traveled outside the confines of our county tell tales of In-N-Out, Shake Shack, and White Castle — if you could bring one chain to the Holy City, which would it be?