Today I had a ball fitting appointment with the Titleist staff at Monarch Bay Golf Club in San Leandro , California. After working with Lucas the Titleist rep he determined with my 57 year old swing it would be best if I play the Pro V1x ball. It was fantastic using Trackman and analyzing the data was informative. There's me in the middle and Lucas to the right. I'm now armed a dozen of the Pro V1x and heading to Eagle Vines Golf Club in Napa Valley on Saturday. Thanks again Titleist you're the best !