bigcountry,

I recently put the STS on my Allegiance and I was very happy with the results. The STS system added a little weight to the back of the bow that off-set the stabilizer up front and made the bow balance very well. I shot it with all the accessories including the hush kit and the first thing that I noticed was how quiet it made my bow. It didn't really do a whole lot for the vibration simply because their was almost none to begin with. The noise though was amazing. This bow is already very quiet but the STS system made this thing whisper quiet. I then took off my string silencers and shot the bow. It was slightly louder but still quieter than it came from the factory. Without the string silencers and just a STS system you get a different sound from the shot, it is more of a low thud from the string hitting the rubber. Now, I then decided to have a buddy of mine shoot it and I stood off to the side and that is what really suprised me as it was so quiet. The bow had a "lower/deeper" sound after the shot that seemed harder for my ears to pick up than the twap of the string.

Add to that the fact that this system helps with achieving tighter groups due to the arrow comming off the string faster and at the same point each time, and you have a product that is well worth the money!