I was fit into the same shaft. Tested about 7-8 different shafts. This was at the top of the list performance wise, although the ventus black 6x was just as good. During my fitting, I preferred the feel of the TSG AD Blue over the ventus, which is why I went with it. My fitter told me it was a combo between the DI and the DJ. Was fit at the True Spec location at La Costa.
Played the 75x for about a year, and then got a ventux black 6x for free, so playing that now, mostly because it's a little lighter and I can keep the swing speed up towards the end of the round with the same tight dispersion.