1. Colt Government Model Series 70- Classic, beautiful design, rich in history, high quality, .45 ACP. What's not to like?
2. Glock G26. Concealed carry guns are always a compromise, and this is the best balance of features for me. Relatively small size, but decent capacity, adequate round (Gold Dot +P), light weight, durable finish, trigger not great but acceptable. Very easy to take down with the ability to drop in any needed replacement parts. Have a Trijicon RMR installed (with back up irons), great for my aging eyes. Added a AA .22 conversion kit so it also makes a great sub-caliber trainer/plinking gun.
3. Ruger Mk II. Have countless rounds through this one. Hard to beat for the fun factor.
Honorable mention: S&W Combat Masterpiece. Mine are older models with glass smooth triggers. Most perfectly balanced K frame. Great shooters even though they are "only" .38 Specials.