I purchased this recently and I was looking forward to hitting it off on my Titleist 905R. I had it pured too. As soon as I hit the first ball, I knew the shaft was flexing too much... too torquey. The stiff shaft, torque and swing speed specs did not work for me. I have a 105-108 mph swing speed and normally have a carry of about 250-255 yards. I typically average about 290 +/- 10 yards off the tee. With this shaft, I had to slow my swing speed to let catch up with my rotation. Thus, I actually lost yardage. My drives were averaging only 240-250 yards. My 3 wood goes 240-245. I'm disappointed. I should've gone with the x-stiff. Now my driver is out of my bag and I purchased a new 907D2 with UST V2 stiff shaft. I'm not back to 290-300 yard drives. I hope this can help others...
Pros: Quality, Durability
Cons: Difficult to Use, stiff not stiff enough as advertized, torque not low enough for higher swing speed