Khopesh or Rapier: Which is better for an Assassin Rogue

[Nader]

Basically what the title says. I have seen assassin rogues with either and I am wondering which does better for a rogue. (My bet is on khopesh but I am probably wrong)

Also I am curious in the calculations if someone is up for it but I do not really need it.

Edit: I know it seems bad to ask about which "weap is better lololol" but as a new player I want to make sure I do not do something dumb when it comes to the wep choice (even thought so far from what I have read it seems to be some-what of a personal preference between the two)