As a many decade bow hunter who has tried most of the technologies I can say I concur with SH. A well tuned bow with the properly weighted arrow and broad head will give great results without any of the issues associated with a mechanical. I am not saying people shouldn't use them but at least in my case I tried them and found unfortunately for the deer the results didn't measure up with my fixed high quality heads. I was shooting a 70 pound Mathiews bow with the appropriate arrows so there was enough speed and kinetic energy to operate the mechanical head.