Mid-Range Burgers
I would try Max & Erma's. I know there are locations in PA but they are worth it. I am picky and while I like Red Robin you can't compare to Max & Erma's. The only other comparison was the Ground Round back in the day when they had like a WinSchulers soft cheese topping. They stopped doing it back in the late 70's and after trying them twice after the change I never would go back.
http://www.maxandermas.com/menu/default.aspx?category=Burgers

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