As I have indicated in several other threads, I am in the process of upgrading to a Mathews Switchback. I have never owned a Mathews bow before and only shot the Switchback several times on the day I purchased it. None the less, I was wondering how well the built-in harmonic dampers and string suppressors work. Is there a need to add additional vibration and/or noise reduction products. If so, what would you recommend? Thanks Again, your help and opinion is greatly appreciated.