Meh, to say the truth, Itachi was the most badass. Would* be if he didn't care for his wimpy piece of cat of a [s]sister[/s] brother.
 I mean, he was the only Uchiha who wasn't  but hurt. All the others were crying about being wronged and shit but no one was wronged more than Itachi and in addition he didn't even seek vengeance, only looked for a better future while looking out for his bro.