I second the Smashburger/Red Robin recommendations-plus they are only a few blocks from each other in the "Belly of the Beast"-71st St. between Olive and Sheridan.Partial to smashburger myself, and Red Robin, damn.
Haven't tried all these others... I needa make some stops in Tulsa on my way through for work. I see Freddie's Steakburgers on 71st near Mingo all the time, but haven't tried it yet.