No particular order, because I love them all -

Cock-o-the-walk
Ron's sausage chili cheeseburger
Earl's Cheddar Burger
Irma's no-name burger
Johnnie's #3
Beverly's Big Bev
Goldie's special

OKC really has become hamburger heaven, especially since Ron's came here. Be sure to use Melinda's XXXX habenero sauce on the chili cheeseburger