I worked on a client's Honma TW 757 driver with a 60g Vizard PT. I checked an EI profile on them and found then to be ----> The PT family are butt stiff, more flexible mid section and tip stiff low torque tip. I'd match up your swing speed, transition time and release early, mid, late to "fit" that PT shaft cuz they ain't cheap so you don't have a surprise.