Top 10 Favourite Sith

Can concur, except I wouldn't even rank Kylo Ren on any list.

^I personally liked him, but he's no Darth Vader.

Kylo's not a Sith.

1. Vader

2. Darth Bane

3. Darth Zannah

4. Darth Sidious

5. Darth Plagueis

6. Emperor Vitiate

7. Exar Kun

8. Kreia

9. Darth Nihilus

10. Darth Malgus

Well then...

Vitiate

WHERES REVAN DURP

I don't consider Revan a Sith.

He definitely had a Sith period, but he's mostly a Jedi, and it's even implied he went Sith to help prepare the republic for the hidden sith Empire is unknown Space at the time. He then goes greyish Jedi and goes back to fight Vitiate willing to die if it scared Vitiate way from the Republic for a few more years to build up and prepare. He ended up holding him back for like 300 years.

Dude was a unfortunate that he had to live in the time of Vitiate or he probably could have beaten them.

also have two honourable mentions...Krayt and Nihilus