edit: Oh, and, in fact, Chrno Crusade is a pretty good manga and animation. The stories of both versions differ quite a bit, but both are quite good.
Hey, so does Full Metal Alchemist, and everyone loves THAT, right? Personally I like it if two versions take different routes as it adds more diversity to the series.
Actually, I don't. I find the FullMetal Alchemist animation one of the best there is, while I couldn't keep reading the manga when they started throwing that rentanjutsu crap in.