Love burgers, so have tried them all including MOS burger in Singapore., recommend skipping that one. In 'n' Out is local to me, but barely okay. Kind of mushy and no real flavor. Five Guys costs significantly more, have tried it in DC at Dulles and in California. Meh. Had Shake Shack in New York. Jolliebe in Manila was out of chicken so I had a burger - just don't. And yes, I've eaten McDonalds in many places in the world (it's often, but not always, better than in the US.)

None of them are very good compared to almost any bar or restaurant $10-16 burger (except in England, land of the meatloaf burger.)

For me Shake Shack wins hands down because they serve wine. It comes in a plastic stemless wine glass a la Riedel, but has an indentation for your greasy finger to keep it from slipping out of your hand. Two pluses for Shake Shack.