I'v tried the new T-MB (Dynamic Gold s300) and the AP2 (Project X6.0). My currents irons are AP2 712 (dynamic gold SL S300). The T-MB were impressive on feel and performance but the ball flight was a little bit to high. Is the Dynamic Gold SL would be a good chouce in order to get a lower ball flight and is there other shafts option? What are the upcharge ?