I recently got fit for a new driver shaft and was fit for the hashimoto stiff on and M1 with "truspec golf", I tend to spin the ball a lot and hit down on it. The shaft produced good number with a medium ball flight. Have not pulled the trigger on it yet due to not knowing much about the shaft, but felt great to hit and like I said everything looked great on launch monitor and by the eye. Just wondering if anyone had any more info to add other than whats in this tread???