I currently play the 716 CB with the True Temper Dynamic Gold AMT R300 shafts (3-pw). I want to upgrade to the 718 CB's. However, I notice that they come out with the Project X LZ shafts. Taking my current set's shafts specs into consideration, which flex (5.0, 5.5 or 6.0) of the Project X LZ will be comparable with what I have at the moment. I live in South Africa, so I do not have access to the Titleist fitting opportunities.