I have been playing the Stability shaft since they came out and it has proved to be more consistent than others in the past. For me, it tracks the line chosen more accurately with better results. As with any club, if you don't trust it to do what you want then it probably won't work in that moment. This shaft has made a "believer" out of me.. My playing partners saw the improvement and switched their shafts as well. Now I am losing a bit of $$$. I should have told them that I had taken more lessons instead of just changing the shaft.. Looking forward to getting out to drop more putts soon.