All my friends and hunting buddies and myself have the Muzzy Zero Effect. Yes it's quiet and totally reliable. The main thing I like about it is you NEVER have to worry about where the arrow is. If you have to let down you don't have to worry about the arrow being pinched off the string. It'll stay put. You can sit in a tree, turn the bow just about any way you want, draw and the arrow is where it's suppose to be. Never again do you worry about fletching contact or the arrow falling off the rest. It also minimizes hand torque induced at the moment of truth because once the arrow starts to move forward the rest is gone and out of the picture. It's deadly accurate. I've had mine for nearly 3 years. If mine broke tomorrow I'd buy another. If that one broke 2 months from now.... I'd buy another. Mine has never broken or moved. When you change string you may have to do a little adjusting but when the string is broken in you're good to go. LOVE IT.