I haven't thrown the Defiant Edge. The Critical Theory was a let down to me. The Marvel Pearl went long, smooth and had a decent snap into the pocket with a good drive through the pins. When I say decent snap, it was well above average and very adequate, matching the shape of the hook quite well. It went great through the heads and mid-lane leaving almost all the energy for the hook and roll.
*The above statements are only my unbiased opinion after throwing the Marvel Pearl today and is not to be construed in any way, shape or form that I will EVER buy another Storm/Roto-Grip product until they at least answer my e-mail from January. The ball used was a friend's who happens to have the same span. The statement above also does not intend to diminish the ability of any other ball previously or currently on the market.
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