.32
I've owned and test fired small pocket pistols in all of the calibers you mentioned, and the .32 definitely blasts a bigger hole in the target. Not just due to the slightly larger diameter, but due to its greater weight and the "temporary wound cavity" it creates. None of them are very good on penetration, but the .32 is better in that regard than the others, too. If you get a hollowpoint .32 to open up, it will probably stop after just a couple inches of penetration. My .32 is loaded with 60-grain jacketed hollowpoints, but they won't open up. I tested them in soaked wet newspaper bundles. They are louder and more of a deterrent, I think, than the standard 70-grain FMJ ammo, so that's why I use them.
Seriously, if you're concerned with ballistic performance, you don't want any of these calibers. You only carry one of these because you need a tiny gun for the method of carry you choose and the place you're going that day.