BulldogsFan89-
Based on what you've said, I would recommend an Arsenal Reactive or a Blue Heat. The Arsenal Reactive is my first choice because the coverstock is a fairly significant step down from the Rule GP2- 1) It doesn't contain any particles. 2)The coverstock, Power Pack, is slightly weaker than the GOO used on the GP2. Being a low-RG ball, it should rev up easily for you on heavier oil and provide a strong arc to the pocket. It should be significantly stronger than the Triple X, which would give you good separation among your 3 balls.
You could also try a Blue Heat. This ball does use a particle coverstock, but it is weaker than the coverstock used on the GP2. It also has a higher RG than the Arsenal Reactive, which would make it want to go a little longer before hooking. The one benefit, for you, for the Blue Heat over the Arsenal Reactive is that it will probably be about $25-30 cheaper. I have not thrown the Arsenal Reactive and the Blue Heat side-by-side, but I would assume that the Arsenal Reactive would handle about the same amount of oil as the Blue Heat, while giving you a little more hook on the backend.
There are plenty of Track experts on this website. I would suggest waiting a couple of days before making a decision on which ball you want to buy; there will likely be many more good suggestions for you.
Good luck in your bowling!
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Jeff Voght
PBA Eastern Region Member