I am not to familiar with the zero effect. I have been shooting the Trophy Taker for two years. Been on a several different bows and have nothing but good to say about it.It is easy to set up and never has failed to perform as advertised.
I have set up quite a few of them for friends and they all feel the same way.
I know of a couple that initially shooters had a problem with them, but both were set up to pick the arrow up too late. Once set up right they worked well , also.
ken12