Got fitted for AP2 irons. I'm playing TT DG S300 with Titleist 735. Was recommended TT DG R300. Gained 3 mph in club head speed. I would like to know if anyone is playing TT DG SL. Would this shaft play the same as TT DG? Is quality as good as the DG   shaft? I readed a couple of review that DG SL shaft might not be as good as the DG

                                                                                                          Curt