I too say to wait for the Motiv Primal TV4! It should be a beastly pearl! Otherwise the C-System 3.5, Lane #1 Timebomb, Mutant Cell Pearl, Anarchy, etc... I could go on and on, there are a ton of great pearl pieces available. Talk to your pro-shop, he/she should be able to get the right ball for you in your hands. A new ball purchace is always fun, there's just sooooo much to choose from.
Arsenal:
RotoGrip: Cell, Cell Pearl
Lane #1: Time Bomb, Supernova XP, Chainsaw