| ok the new thing on drivers is Called "MOI" Moment of Inertia. If i'm not mistaken it puts the center of gravity lower and farther back inside the club making the club less likely to turn off target as in closing the clubface or opening it while swing ...all in all causes the club to rotate less. drivers like these include D1 from titleist the square drivers from Nike and callaway and theres other ones from all the name brands ...CC's just talk about the size of the clubface meaning bigger club harder to miss the ball basically and bigger sweet spot ... So if your looking to stop the rotation of the club on off center hits and keep them straighter look at the new drivers with the higher MOI |