I have shot deer using the Fred Bear method, the Louis Armbruster method, the Howard Hill method, my own with a shaving sharp edge then light serration, and just plain shaving sharp. To be bluntly honest if it is a keen edge it will kill a deer. Not saying that I wouldn't go for the smooth shaving sharp razor edge and more foc balance if I were going after a cape buffalo, but for what I hunt I have seen very little if any difference. For the fellow that cannot get a shaving edge but he can get a keen filed edge or a keen Howard Hill method sharpened edge, it has been proven to work for better archers than most of us, so do what you feel the comfortable and are the most able to work with.