Normally I get my wife's heads smooth and shaving sharp. Last year she shot two arrows through a year and a half old buck. One was shaving sharp and the other was one that I had resharpened with a a file after it had been test shot into a bale. After field dressing her deer I went back to find her arrows. I was surprised how much edge was left on the file sharpened arrow, it could easily kill another deer, the smooth one that could easily shave had become very dull, both old Bear broadheads. I wonder if metal hardness may determine which sharpening method works best for which head. With my custom tempered and ground single bevel Hills, razor edges hold up on deer hits, but do not seem really any different than the filed edge for good blood trails and penetration than the filed serrated edge. What I see most often with people just learning how to sharpen is thinking that a burr left on the edge is a smooth razor sharp edge,when that burr is gone so is the cutting ability. For them I most often suggest get the KME sharpener or stick to heads that can get sharp with proper file techniques.
I too had a head get away from me with a buffing wheel. Being a classical guitarists things that can hurt my hands are a bit frightening. A bare buffing wheel can be a dangerous thing.