ATB or CTB?

Which batle style do you think is better?

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ATB: The battle style of Final Fantasy X-2, where the fiends attack relentlessley and with no real particual order, but they're stats build up quickly and with much more ease. (EXP points)

-or-

CTB: The battle style of FFX, where the command window allows for time to really think allowing you to go through all of your inventory and abilities. (Sphere Grid)
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I'd make this a poll, but I'm still kind of new, and don't know how to do that yet!

Thanks for the read:
Miranda