The season is approaching here in the Midwest and I have overhauled my entire bag except for the driver. My question is, are these "exotic" shafts worth the price? Right now I have the Diamana whiteboard 70 X. Looking to lower spin rates a bit from that I have notice the Motore Speeder Tour Spec at a significant up charge. I had the Aldila Rip a 80 in my 910D3 which I loved and falls in line with the same spin rates as the Motore.