The Curelyon coverstock, and some variances of it, have been used on quite a few balls. They would include the Blue Thunder, Lightning Flash and many more, all with different strengths and weaknesses, as to lane conditions, adaptability, etc. The core/weight block does make a difference, as will drilling, and of course each individuals game.
Personally, the Accu-tread and Curelyon coverstocks have been excellent for my game.
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