I'm not sure if I can say this is the #1 burger in the GTA but it is certainly top 3. Absolutely amazing, fries were nothing special but that's not what it's about. If you can eat it I'd recommend 'The Vatican City' from the 'Secret Menu' which is a double cheeseburger that has grilled cheeses for buns. You may have to wait a bit, it seems to always be busy, somewhat pricey but I'd say worth it. Very limited seating, pretty much just a small bar where you likely won't get a spot. Cash only (They have an ATM).