Yep, Zwickey makes some good heads.
The best judos on the market too.
The key is "sharp". You want that blade cutting stuff from the moment it enters to the moment it exits. Any severed vessel is a releaser of blood. The more blood loss, the quicker, the sooner you'll be loading the truck with your prize.
A blade that's not sharp enough will push these vessels out of the way as it passes without compromising them.
I like Zwickey and Ribtek for this. I can get both razor sharp and they mount very easily on my cedar shafts. An adapter and they're ready for screw in shafting as well.
I bummed a stinger off a guy and tried it. The head has a LOT of potential.
Threaded Mode