I prefer some story that has the main character not being -too- over powered. I like the sense of having some sort of realism and not always being some huge hero. Being an ordinary character that manages to do some semi-extraordinary things. Maybe have the hero be a part of some large army where he leads a small unit. Make it so that he can't take on a whole army by himself though. He would need to rely on others to help him out, but he can still handle himself in a fair fight or even a little unbalanced fight (one vs two, one vs three, MAYBE one vs four).