Not trying to start a bashing thread or anything, but it seems as if Bowtech has solved their limb/limb pocket problems this year. That being said, I went from a Liberty to a Protec with spirals, and they both feel dead in the hand, are whisper quiet, and have no vibration. I have shot an Old Glory and found it to be the same. I'd say the cam and a half would be better if you wanted adjustability of the draw without switching cams. But I'd also be willing to bet that the Old Glory was a bit faster.