I know this thread is pretty much dead, but I'm going to throw my :2c: in anyway.
Colt 45ACP MK IV M1911 Government. (Series 80 with firing pin block & solid barrel bushing, and half cock shelf) There are many variations of this pistol, but only a few are really top notch. There are even series 80 models, that aren't "real" series 80, so you have to be really careful when buying one. You can tell by the price difference, normally. Unless someone's trying to bamboozle you. I would pass on the Gold Cup models too. If you're going to buy one of these, you need to study up first, because there are a lot of ways to get ripped off with it.
Walther PPQ M2 9mm
CZ 75 SP01 Shadow 9mm
I would stay away from the Glock 19. The only reason the US Navy Seals changed from the Sig P226 to the Glock 19 is because it's cheaper. They changed the qualification parameters for their handgun so that it's no longer based on accuracy and repeatability, but on cost. That's why they went with the 19. It's mostly plastic composites. *My personal preference only* I don't want to start a war about this, please.
The Sigs were in dire need of replacing because the service contract had run out... And the Sigs started dropping in QC out of the factory, they'd come off the shelf with glaring defects that had to be replaced. It became common practice to defer receivership until the US military did their own QC, and got all the kinks worked out. When it goes boom, the P226 is one of the finest handguns available IMO. I have one, so I'm biased. It is by far the most accurate handgun I've ever shot.