https://www.titleist.com/teamtitleist/team-titleist/f/club-fitting/17331/910-d3-driver-with-white-boad-shaft-diamina I have currently a 903 driver with alidela shaft 75g stiff. I hit the 910D3 driver with the Diamina shaft and it felt realy good. The ball flight is great and felt that I got more distance. My swing speed is around 105 to 110 mph. I know there areen-USTelligent Community 10https://www.titleist.com/teamtitleist/thread/76983?ContentTypeID=1Thu, 21 Jun 2012 17:21:12 GMT9ab519fc-5311-4952-85cd-0a0ceffb73fb:10d4ec9b-cf4a-4dbe-95af-84716a7a6ba0Moxen<p>It&#39;s hard to tell without seeing your swing, but with that being said, I have a 910 D3 with an aftermarket whiteboard.&nbsp; I have a 110 mph swing with a stiff and standard tipping that works great for me.&nbsp; That is on the high side of the swing speed recommendations for a stiff though.&nbsp; If you have a smooth swing I&#39;d say stiff but if you have an agressive tempo maybe try the x-stiff.</p><div style="clear:both;"></div>