Went to check out Kelly's Burgers on a chowhound recommendation last week. It's on 16th St., next to Katz's Bagels. I asked for my burger cooked medium-rare, and it came very juicy and pink all the way through. However, the meat had NO flavor. Even with salt, it still tasted like nothing. The bun was a standard flabby white bun, the bottom half of which rapidly disintegrated under the drippy patty. Not worth a trip, not when there are better places like Rosamunde (on Tuesdays), Burger Joint and Big Mouth out there.