I have changed my clubs each time a new model has come out. I played 910 D3 8.5 with K'hali stiff flex. From there I went to a 913 D3 8.5 with a Diamana D+ 72 stiff flex. I've recently , last week, received my 915 D3 8.5 with a Diamana D+ 70. I also had the matching F fairway models in each range.
Of the three models, in my opinion, the best combination for my swing is the 910 D3 8.5 with the Diamana D+ 72 stiff flex shaft. The sound and feel is by far the best.
My question is , am I able to still get a new 910 D3 8.5 driver head ? Do Titleist keep previous models and make them available ?