[pax]

No to the thumb break, since it's just for range use and competition. For competition, you don't want anything that will slow you down.

Avoid collapsible nylon. Stiff nylon's okay, but then you will have to get one with a thumb break for safety, and see above about "slow you down." I'd scratch nylon off my list unless I were really short of scratch.

From your list above, I'd go for either the Galco or the Minotaur.

Given your requirements, I'd be looking at slide holsters. Minimalist designs like the Yaqui slide & other slides seem to put less wear on the gun, all things being equal; they also tend to be more affordable.

Avoid anything that says "fits belts up to 1 3/4" or "up to 1 1/2" -- you want one that actually fits one specific size well, or that can be adjusted to fit that one size. If the belt attachment is bigger than the belt, the holster will move a lot when you draw. That slows you down and it's uncomfortable. So try to find something that is designed to fit the belt size you will wear with it.

pax