I have several 1911 handguns that I have run over the years and still prefer the GI M1911 styles with some slight changes like the sights. I’m a big fan of the Trijicon HD or high definition sights because they are so much better than the traditional tritium sights. Much brighter in the day time, too. I’ve messed around with the Glock 30 and the Glock 21 but I find the Glock 21 to be entirely too big of a handgun for CCW and just something so well balanced as the 1911 just can’t be beat. The Sig 220 is a close second but the trigger pull differences between a single action and a SA/DA is considerable if you are looking for first hit accuracy. I love my Sigs but they are not going to be as consistent with the first shot being so much hard to pull.
Wilson combat makes a lot of gun parts for the 1911 and you can customize this gun in just about any way you want. Hand sizes can vary so customization of a firearm is important but the one thing that I find constant is my Wilson Combat Magazines are always going to be running in all of my 1911 handguns. I prefer the 8rd ETM magazines because they feel a little stronger and with the numbers being printed on the bottom of the magazines its easy to keep a track record of my magazine rotations when I am shooting IDPA or other competition events. I’ve also noticed a much better knock down ration with 45acp ball ammo on steel plates and that’s really just what is so good about the 45acp.