To everyone who has replied to Kevin's inquiry,
If he's been using a ball as relatively mild as a Brunswick ScreamR, why would you recommend any X-Factor ball (unless there's something here I am not seeing)?
They are all significantly stronger than the ScreamR, AFAIK.
I'd be inclined to recommend a Hot Rod, a Hot Wire (with polish) or a Flash Point.
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"Just because you can do something does not mean you should do it."