FastTracker is correct they are both solids. The K.E. does have little bit pearlessence in the blue, but it is considered a solid.
As for reaction differences the K.E. is a couple feet earlier than the Kinetic and 4-5 boards stronger. This is a very versitile ball by changing surface, hand positions, angles, or speed. I have been amazed at how many conditions that I have been able to use it effectively on.
Rick
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Rick Guined
Track Regional Staff Member
Vise PBA Regional Staff Member