The Invasion has the new R3X cover-stock which creates about 7%-9% more friction and also is a mass bias ball which means you will be able to create more motion in the backend if desired. also this ball has the first weight block of its kind becuase of the archs going down the side of the weight block, it will be more continious on the backend and through the pins. if you want to play more angle and get into more oil, the Invasion should be in your arsenal period.