Head and shoulders above other 'fast food' burger spots. The beauty of South St. is the simplicity of the menu, and the large variety of toppings for your beef / chicken / veggie burger.
The kicker is that they serve New York Fries (owned by them).
Definitely unseated both Licks and Harveys as my favourite fast-food, but properly grilled burger.
Locations are generally spacious, modern and well laid out. This one is particularly large since its located in a shopping plaza.