Never shot a Stinger, I am sure its a good head.
Killed piles of deer with a woodsman. I find woodsman very easy to sharpen. Mount the head on the shaft (or screw it in), make five strokes per side, sharpening two blades at once. Rotate the head, and make five strokes on that side. Continue this method on all three sides. Go from 5 strokes/side then 4, then 3 etc. Once this is completed, then I usually make apx 30 light strokes on each side. At this point the head is very sharp. To make it even better, find a piece of cardboard. Use the cardboard as a strop. Unscrew the broad, this makes it easier to strop the head, but you can strop with the head on the shaft. I lay the cardboard on the table, and make 12 strokes/side. Now the head is SCARY sharp!
I have used this method for woodsman, VPA, Snuffers, and Woodsmen Elites, works great on all three blades
chris <><