IMHO I would first ask what is the purpose of the the said weapon?
Home defence? Conceal carry? plinking in the desert?
Everyone wants a handgun, not everyone has the reason why. Besides just wanting it.
I personally like and have owned several 1911's. However even being a fan of them they do have
thier drawbacks. The first being it's a .45. The capacity is an issue even with a double stack and
when you want to do some target shooting the ammo gets pricey unless you reload.
I personally don't reload or want to invest in it so.....
The way I would think about it is,
Home defense I have an 870 uh..Home defence. Yep, just point it in the general direction.
For conceal carry I would choose a double stack .45 just because in my hands it aims where I "point" it. Almost automatic, big points in my book.
There's other .45s out there but IMHO first they are over engineered, eg HK USP's, or are clumsy at least how I felt they shot, like the Glocks and Sigs in that caliber. I like Glocks but the get a little "crazy" above .40.
Look at Wilson Combat and I've always like the Para's. I've owned more Colts than others. They're nice but take much love and have limited capacity.
Plinking, get a glock in a 9mm and yes it's a great conceal carry weapon. Everything else is junk. I've shot most of them.
Armageddon, holocaust, End of world event. Get a 5.62, it would most likely be the only rifle caliber around.
That is if you can't build a rock-it launcher.