Hi, My son swings at about 112 mph and has a smooth transition. He has played the 909 D3 with the Titleist Voodoo X flex with very good results for several years. We are working on upgrading him to a new Driver and he likes the 913 D3 head very much. We would like to act fairly quickly and narrow our search for a proper shaft fit. From looking at the charts for the 909 and 913 shafts, it appears the Rip Phenom 70 X flex may be a good fit. He doesn't want to hit it low so we dropped out of the Diaman D+, but we are a little curious about the Rip Alpha. Which shaft feels and plays most similarly (or better than) the older Titleist Voodoo?