Hmm.... it's too bad we don't know more of Vindican than the Darach fight. Judging by his fight there (where he died despite good help, if against a strong foe), I go Sazen.
NEW
NewGuy01perpetual
We do know a little more; he was the greatest apprentice of Darth Ikoral, who was one of the most powerful Sith Lords alive at the time.