ORIGINAL: gutshot
PA Hardwood: My findings were about the same as your accept for the string buzz. One of the things that I was really impressed with on the Drenalin that I shot was that it was extremly quiet. But I can go with you on all of the other points.
The Drenalin is quiet but to my ears not AS quiet as the Vectrix, and there deffinitly was some string buzz there too. But I attribute most of this vibration/handshock/buzz to the lighter overall weight, not enough "meat" on the bow to soak up vibrations.