Parsaregood
Head Pro
Really, I do play x100 soft stepped as that's what I was fit for and feels best for me but I have played project x, s300, r300, kbs and honestly they make no difference, I used to practice alot and hit alot of balls and could basically use any of those shafts and it wouldn't be detrimental in any way to my game, so there goes the 'profile' theory for me. Swingweight and clubhead however do make alot of difference.