Witch or assassin and thief or tax collector for a two player game?

By moons1, in Citadels

I think perhaps the thief and the assassin are a bit too powerful and aggressive for a two player game, and people tend to get a bit angry and bitter... Is it better to use the witch and the tax collector? Any thoughts on this?

tokse said:

Any thoughts on this?

In our company we choose witch and thief variant.