Re: 9mm 1911 vs .45 1911???
Its a matter of what you used to but consider this, most 1911 and 2011 race guns are 9mm or 9mm major. The reason behind it is the the 9mm is more controllable and is faster at reacquisition of a target. I shoot in bowling pin competitions every now and then. People shoot everything from .22 to 45. Its usually the 9's or the 40's that win only because they still have some knockdown even if its not a dead center hit on a pin and its faster to get back on target with.
Only cowards shoot with their eyes closed....