I love the wound channels created but have had issues hiking with them as they do come open in my quiver. I personally don't use them anymore for this reason. I have taken several elk with expandable broadheads and so have several of my friends. One of my buddies has several complete pass throughs with NAP Spitfires and another friend and myself shoot a Cabela's brand expandable. Both of these have been very reliable, never open in the quiver, and leave a canal of a hole in the animals we shoot. We all shoot very high kinetic energy bows so penetration has never been a concern... All three of us have a total arrow weight, with broadhead, over 400 grains and I'm well over 300 FPS. I am not against fixed blade but I feel the tuning and wind planning advantages of a mechanical are worth the slight loss in penetration when using a high KE setup.