So I went to Golfsmith yesterday and had their fitter help me out. I brought my current driver along (with the DVS shaft) and tested it against the 915D2 with different shafts. After a few swings the fitter told me I should be hitting an X flex and something around 75 grams. So I tried the Diamana in a X flex 70 grams and hit it okay but nothing worth bragging about. After trying many different shaft combinations I went back to my old driver and hit it much better than the rest. The results, the feel, the trajectory, the spin, everything. The fitter did say that the DVS runs stiffer than most shafts so it's more like a stiff flex by industry standards which is why I can hit it. He did also say the Rogue Sliver 60 (125) might not be a good fit for me since I prefer a little more flex in my shaft. My club head speed was right around 113 during most of the fitting but I struggled to get the ball high enough with the X flex even with a 10.5 head. I hit a few at the end with my driver and was consistently carrying 285-290 with my spin rate averaging about 2400 and launch was around 8.5 degrees. I do tend to shut the face a little, thus creating a slightly lower ball flight and a consistent draw. I'm leaning towards getting the 915D2 with an X flex (haven't decided which one yet) and try it out based on the recommendations and my swing speed. If that doesn't work I'll just get another DVS shaft for $40 and put it on.