My 3 boys also have Whisker Biscuits on their bows. I intend to put the new one I have on my backup hunting bow, when I acquire one that I am happy with. I have shot a few bows this year, and continue to be impressed with just how accurately the bows seem to shoot with the Biscuit rest (when I do my part). Once you have the fletching part figured out (Bohning, Flex-Fletch, Vanetec, etc.) the rest really has few negatives. The only real downside it that little "slap" you can get when the fletching goes through. Not all that loud I guess, but it is noticeable.
I am shooting better than I ever have with my #1 bow, so the QAD is not coming off that one.