I figure since Anchor Bay/Universal/MGM have pretty much used the American and European key arts to death it would be cooler to go with something else.
There's the Italian poster, which was used in a truncated form on the old Boomstick Edition:
Or the three John Bolton covers for the comic book adaptation:
Personally, I think #3 of the comic would make a cool cover. Does anyone know if the TPB released by Dynamite has the covers without the logos etc?