The Silver Diamond, Blueberry, and Cranberry all have different cores. The Pearl Powercoil 18 coverstock will give you slightly more length than a polished solid Powercoil 18 coverstock. The Silver Diamond will provide more of a skid/snap reaction and the Blueberry will have more midlane reaction with an arcing backend. You cannot pearlize a solid reactive coverstock, but you can put a high polish on a solid reactive coverstock with a ball spinner to provide a similar reaction to a pearl.
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