There's alot of wisdom belted out here, especially that Pizza Bob fella. Some stuff I don't quite see eye to eye with, but that's what keeps the world inneresting.
I am an unabashed lover of moonclips. Especially them big .45s, they seem to just be self guiding towards that cylinder. Most of my moon clips average about $1 each. Ranch Products is my favorite all around, though I have some TK Custom as well. I've had approximately 125 of them, give or take. It never ceases to amaze me how quickly I can burn through 200-300 rounds at the range in a very short period of time, giggling like a schoolgirl and having a blast.
I use a Competition Works California De-mooning tool or the Wilson Combat Full Moon Case Extractor. The California tool works best with well broken in ones. The Wilson Combat tool is very inexpensive, and very effective. They're cheap enough to have in every range bag, ammo can, pistol case, etc. Although I rarely strip my moon clips until I'm back home sipping on a cup of coffee and pondering which "Dirty Harry" movie to watch while I'm doing it.
One of my .45 ACP revolvers gets rolled into my defensive rotation quite regularly. As such, I keep a dozen or so new, never used on the range moon clips loaded with my favored defensive ammo. When carrying on the street, I keep them in a pretty rigid speedloader pouch. As good as they are, just a little wobble or ding can mess up your world.
Once I've stripped mine, I do carefully inspect them in the cylinder with no loaded rounds to ensure that they are laying flat. If I have a modicum of doubt, I have no hesitation to toss them. (Admittedly, I whimper when that happens to my $8 each .357 moonclips)
I've never tried the two shot ones, though I would like to. It seems like a neat street carry that would actually be pretty durable.
The only reason I'd mess with half mooners is for authenticity with my 1917.
I've recently started ASI (Action Shooting International) which is very six gun friendly. As such, I'm not so driven to always have the highest capacity, fastest reload, etc. I'm shooting all my wheelguns eventually, but I'm looking forward to my 1917 with the half moon clips and my S&W Victory with a dump pouch! (I already got smoked by running my lever action against the semi auto pistol carbines...lol)
I have some .45 Auto Rim to run some day, but I just don't see a reason to yet when I'm having so much fun with my .45 ACP and moon clips.