Just like the GKF Mirage rest, I jumped on the QAD rest when it first hit the market. In both cases, the problems out-weighed the assets at the 'standard' level of todays equipment needs.
Ditto Len , Ive got both of these rests collecting dust on the bench , allong with a powerdrop , for the exact reason you stated . I think the "bounce" is another marketing ploy . If there is a bounce you would think it would happen after the arrow cleared the shelf . I never had any of the problems associated with the QAD , when useing a TT , or muzzy ZE rest . Ive had some problems with the muzzy on bows with limited cabel slide travel , getting clearance , but those are few .