Any books where the Sith are the main characters/storyline?

I am currently reading the Darth Bane series for Star Wars, and I was wondering if there are any other books out there that the Sith are the main characters and not the Jedi/Rebels/Republic/Empire? I really like to know more information about the Sith and their history. What better way then reading! So a list of novels or books that I can read where the Sith are the main characters/storyline would be nice. ^-^