The Taylormade Superquad technology is still valid in today's world of variable weighting and hosel adjustments. Purchased a 9.5 degree, std. length regular flex Reax 65 gram sharft. Ball flight is low (I normally am a high-ball hitter) even when the weighting is set to promote a higher ball flight with a boring trajectory and great roll-out upon landing. Distance is outstanding as this is the longest and most forgiving driver I have tried even vs drivers from Golfsmith taylored to my personal specs. The regular flex shaft is in harmony with my slow tempo, 100+ swing speed. If you have an agressive tempo I would suggest you go for the stiffer flex. If you normally hava a low-ball flight, I would suggest at least the 10.5 or the 11.5 degree option.