As mentioned above, 1910's are a lot less available in the U.S. than 1922's. True, the 1922 is larger and would be best carried in a holster. In fact, all three guns under discussion are outclassed today by more modern pistols of the same approximate size packing a 9mm Parabellum punch.
Of the three guns, the Colt is actually the easiest to get, and ones in less than top condition are not expensive.
Jim
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