I have a swing that tops at about 91 and a 7.0 handicap... I prefer the x as I get extra distance and that is a premium to me with the slower swing speed.. I tend to have a alot of spin on the ball anyway and though the 1 has better response around the greens, I would rather be hitting a lower iron into the green than being concerned with the feel around the greens. You can learn to deal with the feel of the ball, but you can't learn to swing faster so the premium to me...