I'm seriously digging the Kahlers now too. There's not as much routing out of the wood for these, therefore helping in the tone and sustain department. Plus I think there a little easier to adjust or lock down when you want to drop tune yer axe. The one I was looking at anyways, had a screw/knob you turn to lock the vibrato in place, or adjust it's tension. Not the "bar" it self, but the vibrato system completly. Did I make much sense?