I was a little skeptical about buying a premium shaft, but I had a chance to pick one up in a TM R5 9.5 neutral as a gift. I got fitted on a launch monitor and got one in the S flex. It has made a world of difference. Previously, I played a 983K 8.5 with a Grafalloy Prolite with a S flex. The extra weight of 757 over my previous shaft helped my control a ton. My tendency is to hit a hook, like way out of control 80yd left hook. I have a hard time doing that with this shaft. I see others saying it is "board" like, but I don't get that impression at all. On the launch monitor, my swing speed was about 109-114 with ball speeds in the mid-high 150s. I have played about 4 rounds with the new club and don't think I can recall hitting the ball straighter off the tee. In the past I have had trouble controling the direction and trajectory of my ball flight, but find it much easier with this combination.

I tried about every other driver/shaft combo on the market and this worked best for me. I thought I would like the Diamana/TM combo, but really didn't. I think I tried the Diamana 63, the 83 probably is a better fit for me.