I've owned a Colt's Lightweight Commander for years. It's my main carry gun. I have no trouble concealing it in a Kramer Pro-Line strong side holster. It's very, very reliable, although I don't stoke it up with +P loads. I keep it loaded with 185 gr. WW Silvertips. I'm not worried about "performance", so long as I do my part.
I also have a Star PD .45 (Interarms import), that is a very handy pistol, and easy to conceal. Even more concealable than the Colt's. It's the only pistol I've never had jam on me, no matter what ammo I've shot in it. (Again, I don't run +P rounds through it, and can't find any practical reason to do so. Just my opinion.)
I've bet my life on both those pistols, and in fact, do every day. They work for me.
FWIW. J.B.