Currently I'm using a Cobra Amp Cell set on 10.5* Draw with a NS Pro Regio Formula M Stiff flex. Nice feel to it, rather nice trajectory though I can balloon it at times. Usually hit it with a slight fade, but for some reason it will turn into a slice that can at least get me into trouble, and persist for the better part of a round. Swing speed of 93 mph. Will generally hit it about 230 or so. Long drives can push it out a bit, to quite a bit further. Hit one a bit over 300 yards on a hole that had a long run out.
Bought a Bio Cell+ with a stiff, Matrix Red Tie. Have The White Tie in a firm in my hybrids and am rather pleased, so was thinking the stiff would be okay in my driver. Dead as a board, very low trajectory, and definite slice. I had a Fujikura Fuel 65g shaft from my Amp Cell and that brought up the trajectory but there is still too much fade/slice. I thought about putting in a Regio just like my Amp Cell, but after reading about the Tour AD DI-6, perhaps for just a bit more, it might be an option.
I just hit a demo AD MT-6 in a stiff and that was too stiff. My swing speed of 93 would work for the SR. Or the DI-5 in R1 flex. At 61y.o. My swing speed isn't going to go up. And I'm using 950GH HT irons in regular flex that I hard-stepped once when installing them. Very happy with those. I just installed a SR flex Aldila shaft into a Cobra Baffler 6H and love the trajectory and feel, good for about 165 yards.
So there you go. That should be enough info. SR in the Tour AD DI-6 or R1 in the Tour AD DI-5?
Or, open the can of worms and give me other suggestions for a high trajectory, good feel, low spin, long hitting shaft.