I switched to the Pro-V1x last year. My handicap is down 4 strokes and I jarred my first hole in one yesterday. The performance difference is real!
Shot a hole-in One at Pacific Grove Golf Links hole #10 (104 yards) using my cally 9 Iron and a Titleist Velocity golf ball last December 8, 2020. It was my first hole in one in my 25 years of playing golf.