I have had a hell of a time trying to figure out what the best shape for a maul head is. I've seen the monsters and Fiskars with perfectly shaped V-heads, ones that have an expanding flare (like Rockforge), and ones that have a reducing angle (like a half of a football when viewed from the side). Does anyone have advice on what is the best all around, or are there types that work best on certain woods verses others, dry or green, and so forth? Anyone have any good modification ideas or any interesting work done with an angle grinder on one?