Between the ones you listed, I would get the Ruger. If there is a problem, Ruger will fix it. Buying a used 1911 means you are the one who fixes it. I've mostly had good luck buying used but the Ruger is a very good pistol, by all accounts.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.