I have found that the GKF Tranquilizer works really well with most Mathews bows. Also Vibracheck and Queit Tunes work well with Mathews also. My choice is the Tranquilizer and it does a great job of shock reduction out of my Q2XL after the Tranquilizer I think the Quiet Tune system worked very good when I tested it BUT you need to use the system they recomend for your bow to get best results & honestly it gets very expensive (60-80 dollars depending on the Mathews model you have!). The Tranquilizer does a better job and costs a lot less. Just remember to try several models to see what works best for you.