As to the "sooo many choices", players and fans are obviously pretty loyal to their keepers! GKs as a whole don't have the high profiles that forwards do..hence the choices seem to be pretty regional. Many of the GKs mentioned may be good but aren't "best keeper" material. I agree that Keeper Wars, while fun, are not necessarily indicative of a GKs quality. Some of the best keepers I've seen, although good at shot stopping and distribution (the focus of keeper wars), are preventative GKs that read the game well.
