Last summer, I tested several stabilizers with a digital sound meter. Tested was the Doinker, Vibracheck, XRing, Tranquilizer, and the Stealth. All had about the same reading, except for the Stealth. It was MUCH quieter than the rest, both by ear, and on the meter. Not saying that the others were bad, in fact, they were all pretty good. The Stealth was just better.
Charlie