I like the new Vergil. Right from the very beginning, he gives off the impression that he's somebody that holds all the answers. Someone that you know can be either your best friend - or your worst enemy, and while it's true he's out for justice - the fact remains he is not somebody you want to cross.
He, like his brother Dante is an Angel/Demon hybrid: A Nephilim. Like his original counterpart, he is a master swordsman that wields an unbreakable weapon - capable of cutting through anything on the material plane.
Plus it doesn't hurt I like his new character design and his voice actor's performance. Overall, I'd say that DMC is a worthy successor to the previous games.