The best I've had recently is Cheesesteak Mike's in Hillandale. Not to be confused with a Philly cheesesteak (though I'm guessing they can make it that way), but with LTM & FO. Admittedly, I haven't eaten at Continental in Kensington in ages.
Cheesesteak Mike's has pretty decent fries, as well.
10222 New Hampshire Ave, Silver Spring, MD 20903