8-round mag in my M1911, with a spare 8-rounder on my belt. With one up the spout, that gives me a total of 18 rounds.
8+1+8= ???
Just a typo, no big deal, but your post shows one of the problem with these kinds of "discussions'. There are so many points to consider, and most are base on your personal beliefs and preference.
Most statistics I've seen/heard have non-LEO gunfights being over in just a few rounds. Reloads, especially fast reloads, don't play much into who wins. BUT there's no such thing as having too much ammo at a gunfight, so carry amounts and reloads should play into our decisions on a CCW piece.
And for the record, my S&W 627 has 8 rounds per moonclip, and I bet I can reload it about as fast as you can an auto. (or at least as fast as I can an auto). So with a single reload you have exactly 1 round more than I do, and I can carry at least 2 moonclips in the space of a single mag.
As others have already said, modern handguns are very reliable, and once you break them in and settle on a load for them, they are even more reliable. So neither an auto nor revolver is inheritantly more reliable than the other. 45's and .357's both have good track records, so no one can definitely say one is better than the other in every way. Plus it's not really of a decision of 45 vs .357, it's 45 in a specific auto vs .357 in a specific revolver (otherwise the Desert eagle in .357 or a 625 in 45ACP would have been discussed).
So what you carry is a very personal decision, that no one can really make for you. Which do you prefer? Can you shoot it quickly and accurately? Is the gun you choose reliable? Can you carry/conceal it comfortably? If you can say yes for the gun you prefer than you're set. Yeah, alot of people will say you made the wrong choice, but about as many will say you made the right one.
No one can say for certain that the wrong choice will definitely cause you to lose a gunfight, anymore than they can say the right choice will definitely cause you to win one.