Ryan, I would bring them all. Why limit yourself if you have those options available. Unless your trying to only use 2 strike balls and force yourself to adjust. I have done that a few different times with some good success. It's a great way to learn to adjust.
If your bowling to score, and win some pot games and what not, then bring every ball in your arsenal.
If your only going to bring 2 balls, I would use the PAIN and DOOM.
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HAMMER NO MERCY is Un-freaking real! Using this ball is like cheating!