I have taken about 12 deer with a muzzy 90 gr head and 1 with a shockwave. They both fly very nicely at high speed and seem to leave an adequate blood trail. The difference lies in the durability. The mechanical caused me to hesitate on a shot a week ago because the buck was quartering to me. If it was a muzzy on the end of my arrow I would have launched it immediately. At 90 lbs KE the penetration of the muzzy is crazy. It will bust right through a whitetail shoulder, I have done it. Luckily the buck turned a little more and I put the shockwave through both lungs. Nice blood trail, good penetration but I put the muzzy' s back on my arrows when I got home. I don' t want to question the integrity of my broadhead at a critical time. I simply want to pull back, pick a spot, and let it fly.