I've been playing Pro V1x's for many years now but after reading reviews on here and the info coming from Titleist I decide to try out the 2017 Pro V1's and boy am I glad I did. Definitely a more penetrating flight off the driver even dead into a 20+ MPH Wind as well as the Mid to Long Irons. Plus I still got great spin and control off the short irons and wedges. So I guess I'm now a Pro V1 guy and not looking back. Good thing I had used up all of my X's before making the switch.