Driver & Shaft thoughts - G25 vs 913 D2

Would be wondering how you narrowed it down to these 2, & what your index was & what your normal average SS was.

The 2 drivers are polar opposites in a ways, the g25 built with CG placement for optimum MOI & ease of use with a large volume head. While the D3 built mainly to reduce spin with a smaller 430 cc head, less forgiving across the smaller face area.

Takes a much higher skill level to constantly be either able to strike a completely centered hit or just very marginally off center strike to make the D3 give optimum flight, accuracy & distance.

The G25 a good ways friendlier to off centered strikes across the face, so if the technique not completely there to guarantee a consistency of centered strike at impact it would be a better choice, just out of these 2 options.

As for the shaft, that would be down to the SS, how the swing motion stresses the shaft & where in the swing arc it does, whether there's an earlier or later 'release' coming into impact. To be sure of getting the right shaft for the swing would require looking at the 'numbers' the swing motion produces on a launch monitor with a PGA pro who is used to fitting & teaching with one.