i have a wmb and a roto grip oracle that i purchased for heavy oil i was considering buying a new total shock and awe,but i keep reading more and more about the gp2 and it seems that this ball is the creme of the crop, is there any one that can give a good opinion of this ball in relation to what i have.When you go to the ball comparison site the wmb and gp2 fall in the same category, but i am really unimpressed with the wmb for heavy oil it is a good ball, but not in OIL,and I am really frustrated with buying balls and not having them perform as advertised my heavy oil ball list goes like this ,track phenom unleashed,oracle ,wmb,ebonite addiction and none have delivered what i was expecting.