I am going to club fitter on sunday, and wondering if anyone has been fitted or ordered and played with the 910 D3 8.5 or 9.5 with the diamana white board 73 or 83 and feel it is better than the stock ahina stiff. Is spending the extra $200 worth it or is the ahina stiff just as good? Help me out, my swing speed is about 105 and bal speed is about 155 but my launch is to high so I'm looking for the shaft to help. If you have the whiteboard in your driver let me know what you think?