The 9mm proved very deadly last Saturday in Tucson.
The most important part of CCW is safety and practice. Many people cannot afford to shoot a few hundred rounds at a time of .357, .40, .44, or .45 at the range and/or they cannot handle the blast from those rounds, which means that the first shot better be perfect because there may not be an accurate second or third shot.
I carry a Springfield XD 9mm Subcompact because I know that I can reliably place five shots in the kill zone in a couple of seconds at 25 yards or less, and I don't have the same confidence with the higher calibers. Also, in case you haven't noticed, Cor-Bon, Speer, Federal, and Remington make high velocity, jacketed hollow point 9mm +p rounds that are as effective as the higher calibers, particularly if you need a second or third shoot.
As far as rapid fire confidence, that's why the 1911 is so devastating as a rapid fire platform. The heavier design tames the massive recoil to that which is somewhat less than a Glock shooting 9’s. You can keep those low grain .9mm lightly built hollow points. They won't provide lethal penetration like the kind needed to produce one shot lethality. Extra velocity won't make up the difference either without Sectional Density or mass to back it up.
My CCW is a Springfield XD-40 Subcompact - fits me like a glove, and I fear no evil with it.