Honestly, I think they're both awesome, but The Sword of Justice is a Tyrite weapon and should only be wielded by a Tyrite Cleric with Greatsword Proficiency (through Feat Pick at Level 4) or Paladin of Tyr. At the very least, it should be limited to being able to be used by someone who is affiliated with good, like a Cleric of Paladin of Selune, etc. Certainly, if you are a murder hobo going around killing people in the grove, you shouldn't be able to use it.
Likewise, Everburn is a sword of a Demon Commander. Probably shouldn't be able to use it unless you're an evil murder hobo.
