Thanks for the reply
I was wondering if the R flex would better suit me as I hit them in both my Driver & 3 wood, but have always been fit to a Stiff shaft and my swing speed classifies me as a "tweener". I did hit the NSPro950 this weekend in an MC head and picked up 2mph in clubhead speed, but to be honest i don't seem to have any trouble getting the ball in the air and wonder if a lower launch shaft would be better. Hit the PX 5.5 which was nice, but a little harsh on mis-hits.
Like you said i probably won't notice the difference enough to justify spending $300-$400 re-shafting and I'm probably not too far off with my current shaft, but with my smooth tempo would probably be better off in something lighter or maybe a regular flex in my current/comprable shaft.