i have the XX cel and let me tell u this ball has probably the biggest backend i have seen on a particle ball..... it actually has a bigger backend than my inferno which is a monster as well.
after seeing the x cel in action with a guy that i was bowling against, i have a good inclination to beleive that the x cel has more midlane and the xx cel gets thru the heads cleaner with a lot more backend.... i think both would compliment each other well
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you can laugh at the way i bowl but i will be the one laughin when i am takin your money