I received a bunch of GS gift cards for Christmas and decided to build a new driver (had been playing a 655TJ hand picked 10 deg with a Prolaunch Red X-Flex, 44", PURED). My swing speed is in the 110mph range, so take all of this review with that in mind.
I had a 9.5 deg hand picked to under 9 deg and paired it with a 44.5" ProLaunch Red with Axis X-Stiff, PURED. This has been an OUTSTANDING combination for me. I am 5-10 yards longer and even more accurate than with the TJ, which was a great driver. This club is a little loud, but has a great feel, penetrating trajectory, and is incredibly stable at impact.
I feel as though anytime I step on the tee, I can just give this thing a ride. The shaft is also very stable and offers a penetrating flight. I am not sure it is for higher handicappers as the spin rate may be low, but I have a hard time envisioning someone hitting it crooked when paired with the right shaft for them. Great shaft, great club.