Boring evil and gross evil make awful PCs.
Evil characters can be really compelling, otherwise shows like Breaking Bad wouldn't have been nearly so successful.
Well, this is a "would you rather".
I know some people would play CN as cray-cray. I've experienced it with wolfman. I also know that some people that play LE will emphasize how they get off on bathing in the blood of their enemies and that they will "take any woman they want" because I've experienced that as well.
The former was a pretty awful PC, the latter was cringe-worthy keep-the-doors-locked-when-this-guy-is-around and warn your female friends about him awful.
Given no other information I would rather have Conan the Barbarian or Catwoman in a campaign than Hannibal Lecter or a bigoted Nazi-wannabe.