I have shot both and I would have to say shooting 45 is good for points if your not very accurate or accurate but not much speed in reloads, splits, transitions and movement. But if you are all of the above consider this.
The 9 will give you 2 extra rounds. If you are A-zone all the way, got speed on reloads, splits, transitions and movement then IMO this would be the best platform to play with.
Regardless there is and will be someone better.
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