Very informative indeed. I am not as fluent in the EU on Palpy as I am with many of the other Sith Lords, so this was a good bit of information overload. Perhaps I lean towards Nihilus just because we don't get to see Palpy do much of that in the films? Interesting how powerful Palpatine actually is, and he remained composed and maintained his facade wonderfully throughout the movies. Where as Nihilus, who gained similar power, but lost his mind and failed to see the smaller picture, as a poster above me pointed out. Very nice posts, and I believe I stand corrected. Nihilus is still my favorite, though.

I'm not sure if this has been stated, but I believe that the most powerful Sith would've been Darth Nihilus, Lord of Hunger. Yes, his boss fight was pretty laughably easy. But, in lore he has the ability to destroy entire planets just because of his hunger for the force. The boss fight wasn't difficult because The Exile was such a wound in the force that his, eh, appetite, wasn't as appealing as it was beforehand. In terms of raw power, Nihilus wins hands down.