I play Titleist CB 712, PX5.5, +0.5", 0.5*upright. My length and lie has been verified, based on my distances below, what irons shaft should I be playing stiffness-wise? My ball flight (and a fitter) suggest I need something a little stiffer. Also, is there a definitive/engineering reason why the standard shaft (DG S300) is the "best" choice? Lastly, should the 52/58 SM5's have the same shafts as the irons or different and why?
21 - 215
24 - 205
27 - 195
31 - 180
35 - 170
39 - 160
43 - 145
47 - 135
52 - 120
58 - 95