Finally I have understood why people queue for Shake Shack burgers.
Even though pricier than McDonalds and Burger King burgers, SS burgers are in a class of their own.
I would say their closest fastfood competitor would be Carl's Jr. But Carl is hard to find these days.
SS, on the other hand, are now at several branches.

But still, my fav pricey burger is still to be found at Five Guys (Plaza Singapura).