I use them both. I like the shockwaves better due to the fact that they cause more damage than my 100 gr. muzzy 3 blade. I shot a do last wed. and got both lungs and some liver. She did not go but 50-60yds. but the hole was not what I expected. Shockwaves put bigger holes in them. Both are good heads and I will continue to use both of them but, I want to have a lot of blood for trailing them....use the shockwave.