PA Jay, well said. I have one on my new Allegiance and thus far, really like it. The thing I noticed with the 07 Allegiance is the amount of vibration this bow has compared to the two previous years. While its marginal, it does have a little more. This is because of the lighter mass weight of the bow and nowhere for the vibration to go. However, most of this vibration is coming from the string. TheMeanV2 version I have on mine does an excellent job of killing this vibe. So far, I really haven't been able to shoot much past 20 yds due to the weather, so the jury is still out on how it will ultimately tune with it on. One thing that really has me wondering is whether or not the rubber end flexes side to side on the shot, varying the string path. In other words, say the rubber dampner flexes to the left when the string hits it, then influences the string to go left with it.

To me, quietness is a relative term. There are different kinds of "quietness". Each bow makes a different type of noise. Some notice one bow, but not the other when if fact, they are probably both equally quiet, just create a different noise. Adding different components, like the STS, will create a different type of sound and length of sound from the bow.