looking to "STORM" up my arsenal --- talked to a pro shop about a week ago -- they strongly recommended the gravity shift for me. need to get some of your thoughts. i dont have alot of revs, but i do have the speed. aprox 17 -17.5.   most of my current arsenal is older, and i need to fill some voids. im leaning twords the gravity shift - lower rg - better back end re-action( was told to dull the ball) but the reviews im reading about the dimension are impressive. suggestions?