Itachi's a pretty good character. He's so....cold. It's like, he runs around with no outburst. His voice is always level. He's so efficient, and as a good ninja should, he knows when to run, and does run, even though he can still secure victory. You could die from frost just standing in his presence. One of the best bad guys ever.

Naruto is potentially a good character. If he changes his fighting tactics, he'll be awesome. His mentality is fine for just about everything except for fighting.