2nd one's better imo, but I also think it's hard to make good sigs out of Naruto renders. Nice effects, maybe it's a bit oversharpened?
It's not oversharpened russ, both are pretty good. Only flaws i saw were: 1st tag - from viewer point of view, left side, on his face, theres a small part that is too white. 2nd tag - seems empty on his back
