Shiama
Personally believe it never fits to me. if they say it, and they arent using a mocking tone, you can tell that they mean what they say. any person who watches it knows that they dont need to add believe it, it becomes redundant.
and either way, Itachi is better. He is way hotter
razz LOL again Whisper are we talking about looks or ability.
rofl But even if the voice actor said "Dattebayo" I do not think it would sound right. People who have never seen the jp version would be like "huh wtf does that mean" I am guessing that is where "Believe it" came in.
Now with "Dattebayo" or "Believe" there would just be mouth movements while the voice is mute which might look awkward.