What is the best scallops in the world?

I'm curious to know, what are considered the best scallops in the world? Are there specific regions or farming techniques that produce superior scallops? How do connoisseurs of seafood differentiate between the various types and grades of scallops? Additionally, are there any unique flavors or textures that set these top-tier scallops apart from the rest? I'm eager to learn more about the nuances of this exquisite seafood delicacy.