I'm going to be purchasing a 913 D2 pretty soon and I am in between two shafts. The Blueboard stock shaft that comes with the driver and the Fubuki Tour 73 are the two I am in between. My swing speed is around 110 mph. I know my 6 iron swing speed is 91mph and I have been using extra stiff in my irons, but have yet to make the switch to my woods. I have a mid launch usually with a tendency to draw the ball and when a shaft is too weak I usually fade/slice it and I'm starting to do that with my woods. I'm leaning towards an X flex in the fubuki tour 73 because it has mid launch and spin and should be an easy transition into extra stiff flex. I feel as though the blueboard extra stiff might be too stiff and I would be unable to get my ball flight up, but then again I'm not positive because maybe it would fit me better. I'm just wondering which of the two shafts would be a better fit for me and from what I can tell the Fubuki extra stiff would be.
Once again my driver SS is average at 110 mph and can go up to 115. I tend to have a mid ball flight with a slight draw or straight ball flight.