Other than the obvious, I think the biggest advantage of a rest like the QAD or Ripcord is that you can lock the launcher in the upright position with your arrow knocked and ready to go. On other rests and even other full containment rests like the Trophy Taker, the prongs only go upright upon drawing the bow. So the arrow floats around on top of the shelf or prongs instead of in the prongs. This can cause noise in itself, and there is the possibility of the arrow even falling off on some certain types of rests. The advantage of the QAD over the Ripcord, is that the prongs will still stay in the upright position if you have to let down on the draw. The Ripcord will let down, and you face the same problem with the arrow sitting on top of the prongs instead of in them.I think the QAD just gives you an extra sense of securitythat I feel most of the others do not. Just myopinion.