Voted for Darth Maul.. because he is the coolest one in TPM. He is not realy a Sith LORD, but an apprentice, a fighter. But a Sith nontheless. But then, Dooku is great in AOTC, because he is trying to do his best for the galaxy, from a certain point of view. Exactly the same for Anakin/Darth Vader. The only thing he wants to do is make the galaxy a better place. But somehow, everything works against him. Vader seems to me as a very powerful being, but in the movies, that is not so clear as it should be. Like being defeated by Obi Wan. Palpatine is just very very evil. He is a very typical Sith just like Naga Sadow and other Sith Lords. His rule of the galaxy shaped it to leave his mark on the galaxy, probably forever, even so many years after his dead on Endor.