Only played with it a few games, but I prefer 14mm. Great paddle, but going back to 14mm. This paddle looks like it has never been used. New would be $300 Joola site description- For players who crave hand speed, extended reach, and quick reactions, the Ben Johns Hyperion Pro V features JOOLA’s iconic aero-curve shape paired with an elongated profile. Designed to cut through the air more efficiently, the aerodynamic paddle head makes it easier to stay aggressive at the net and cover more court. JOOLA’s patent-pending KineticFrame is integrated into the paddle’s throat, creating a slimmer frame that flexes to store momentum and releases it on impact for improved ball placement. The Hyperion Pro V delivers speed, reach, and precision, all working harmoniously, making it a longtime favorite of its signature athlete, Ben Johns.