I am not sure I understand your question. Are you asking about a hand held "thumb trigger" release as opposed to a wrist strap style or a Pure BT release as opposed to anything with a trigger on it?
yes i have been told that a mechanical release is better than a trigger release--more accurate and easier to shoot.im not interested in a pure back tension release but something i can use to deer hunt with besides the trigger release.is a mechanical thumb release a better one to choose and shoot.what about the copper john eagle release in 3 or 4 finger?