Eyes of characters in Bleach. From top to bottom...Gins' are unceasing. Orihimes' are warming. Ulquiorras' are overpowering. Grimmjow's are preying. Ichigos' are engulfing. Rukias' are piercing. Byakuyas' are disdainful and overbearing. Renjis' are resolute. Hitsugayas' are calculating fervent.
Naruto vs Sasuke, epicness (you know what it feels like to lose your best friend? the one who knew you best? and then, have to fight them when you don't want to? This is why Naruto will remain popular, I think. Naruto and Sasuke embody the rawness of those emotions and bring them to vivid color.