Picked up the 915 D2 driver in the spring i've always play Titleist drivers when I purchased a 913 I've noticed I was getting a lot of overspin which was making my draw into a Hook so immediately went to 915 I was in line to purchase it probably one of the best Titleist drivers I've ever had added about 20 yards to my drive and I'm hitting 90% of the fairways. Until now have not hit the 917 yet but I'm a little skeptical of the weight transformation slot in back Of the club I've seen some pictures and some videos I guess I won't know until I hit it unfortunately it'll be snowing in Ohio when it's released. Titleist has always been good to my game. Like to hear some feedback if you're willing to make the switch