What are the best versions of Tetris?

[welenbaul93]

I'm really curious which versions I should get to have the complete experience.

I've heard the most about the NES version the most, and I've heard Tetris Effect and Tetris DS are both really fun versions, and then I've heard of The Grandmaster series, but am not quite clear on the differences between them.

Are there any other versions I should know about?