I have an F speed with s shaft and it is a great club. I switched from a 540 xd and have increased my drives easily 15 yards on average with a seemingly eaiser swing. I find myself in new areas on my home course and have had to readjust accordingly. I did hit hooks out of the box, but have adjusted and now swing confidenlly with a slight draw which I had trouble with controlling previously. Longer and more control = positive review.