I am about to purchase a new 915D2 to replace my 913D2. Since I have a $200 gift certificate at GG, I would like to buy it there. In the past, I was fit there for a 910D2, but was not convinced with their suggestion for me to use a Diamana ahina 70 stiff flex shaft. My driver SS is usually somewhere in the 92-94 mph range. (I don't know if it was coincidence or not, but curiously, they had a few of the stiff ahinas still sitting on the rack for sale, yet only one khali 60 in regular flex. Just sayin...) I play regular flex in all my AP2 irons (fit by Titleist local rep), FW and 19* 913 hybrid.
In any case, getting fit there, indoors, doesn't give me a whole lot of confidence. Also, the options "off the rack" are few in regular flex . Either a Diamana Blue 60 or Red 50. Looking at the shaft options online which are available at no upcharge, I see the Rogue Black is available in a regular flex, even though it is not available off the rack. I hear good things about this shaft. Since GG will not have it to try, I was wondering if someone could describe the tendencies and characteristics compared to the Diamanas mentioned above. Why might I want, or not want, the Rogue Black over the S+60?