I am switching to fixed blade broadheads this year after losing a gorgeous buck due to a mechanical head failure. I really like the concept of the big nasty from nap, unfortunately there isn't much information about them online. I am hoping someone here can help with real world experience with the heads, I would like to hear about anything involving the heads. The big question is how well do they fly compared to field tips and how hard is it to tune the bow for perfect flight? Years ago I bought a Mathews Zmax and the muzzys I used were horribly inaccurate, which is pretty much why I started using mechanical heads. Any information would be great, positive or negative. Thanks guys