while I have not tested any of the Zwickey heads, I suspect they are well made. If you are getting good flight and accuracy, I would not worry about the fact that they are a two blade head. Two blade heads have been killing game for a lot longer than any of us have been here, and thier is a reason they are still around, they work!

TAKE YOUR KIDS HUNTING AND YOU WON'T BE HUNTING FOR YOUR KIDS