I used the Trapdoor last year and it work very well for me. I bought a Trophy Taker this year and even though it shoots very good I just don't like the string going to my cable and the fact that the arrow lies on the shelf until full draw. I switched back to the Trapdoor and it still works great. It is a little bit noisey but not to bad. The troubles that they were having with the Trapdoor was with the original ones and have since been fixed. I hear great things about the Muzzy but I don't personally like the looks of it. Not a good reason not to use one but maybe someday I'll break down and get one to try.