This question also came up in the technical forum. What I said there is that I have the Trap Door, it has worked very reliably for me, but for hunting use - well, I have ordered a Muzzy to try that. When I do something stupid like accidently hit my bow against something while drawn I have had the rest drop on me. I don't want to think about such things while hunting. Maybe for people more skilled than I am it would suit for hunting too, but for me it is for target and casual shooting.

As far as the Muzzy ZE goes, my objections were based on philosophy and looks, but I broke down after reading all the good things people had to say. After I ordered one I noticed on another forum that people had difficulties with the slide - it promoted cable wear. This has apparently been fixed in the latest shipping models.