$3.28, 336 Kedron Ave., Folsom, 610-461-4228.
Matyson
Burger Still Life
The burger at this innovative BYOB is so carefully hand-crafted - from the house-baked brioche bun to the carefully half-charred onion round, a slice of sharp Lancaster cheddar, slow-roasted tomatoes (to cheat the seasons) and the plume of soft bibb lettuce - that it looks like a work of art. The bun is a little too delicate, in fact, and the house-ground meat is a notch too fine for ultimate perfection. But the flavors, oh the flavors, were meant to be eaten, not watched.
$10, at 37 S. 19th St., 215-564-2925.
London Grill
The Aristocrat
This Fairmount institution was updating pub food long before anyone knew what a gastro-pub was, and the London's signature burger - posed an English muffin, but of course - remains one of the city's best. Made from a half-pound of good Lancaster organic beef, I like mine topped with retro herbed boursin cheese and caramelized onions. It's still the menu's most reliable bet.
$9.50, at 2301 Fairmount Ave., 215-978-4545.
Honey's Sit'n'Eat
The Tzaftig Melt
Hip Northern Liberties is one of our best burger 'hoods, from Standard Tap to N. 3rd. But Honey's gives the burger its unique Jewish deli twist by updating the patty melt. The 8 oz. black angus rounds are very good, and memorably juicy. But they're even better sandwiched with caramelized onions between two extra-thick slices of Hudson Bakery's seeded rye that have been griddled to a buttery deli crisp.
$9.50, at 800 N. 4th St., 215-925-1150.
Trinity Pub
The Batter Burger
It's not as if a good burger needs to be deep-fried. But Irish-born chef Martin Doyle insists this is an authentic late-night staple on Dublin's fish-and-chip row, so I'm eating it. I didn't want the bun. The crispy beer batter was all the bread a burger needs. A sassy curried dip on the side gives it the ultimate U.K. twist.
$10, at The Pier Shops at Caesars, 1 Atlantic Ocean, Atlantic City, 609-345-6900.
Honorable mentions
Grace Tavern, 2229 Gray's Ferry Ave., 215-893-9580
Royal Tavern, 937 E. Passyunk Ave., 215-389-6694
Vintage, 129 S. 13th St., 215-922-3095
Tangier Restaurant, 1801 S. 18th St., 215-732-5006
Chaucer's Tabard Inn, 1946 Lombard St., 215-985-9663.