I remember the pro at the course where I worked as a kid, played a persimmon driver until the mid-nineties. If he was losing distance with it, I don't think I want to see where he'd be hitting a new driver. He was such a good driver that when he was about to demonstrate how to hit the driver, he told us we were in for a treat! And he wasn't kidding. It was a different kind of swing than you see now. Not a lot of torque on the knees or body, the left heel significantly off the ground, but a hell of a lot of lag and he was up on his toes at impact.