By far, the 280, and most of my relatives who eat McDonald's stuff share that opinion. In France, the 280 is a burger that weighs 280g, with a square bun, a larger-than-usual patty, tomatoes, onions and some pepper sauce. It's pretty simple, but it never disappoints, and the quantity/price ratio is pretty good. Unfortunately, it's a semi-temporary burger (it disappears from the menu then comes back every sometimes), so gotta get it while you can. I think it's on the menu right now, gotta go get some soon…