IF it is for true SHTF, then I would go out and find which one you can buy spart parts for (extractor, ejector, firing pin, FP spring, recoil spring, main spring, trigger group, sights, etc. then buy a couple of spare parts sets. Then go buy the pistol.
Some great pistols are impossible to buy parts for, you have to send it to the manufacturer. Or you can buy parts, but it will cost you $200 per set. This is one of the important reasons I like the Glock pistols for SHTF. I can buy a complete set of parts very low cost from multiple sources.
the 1911 has plentiful parts, but some of them can get pricey.
If you cannot buy or afford spare parts, then what will you do when SHTF, last an extended time and a part on your pistol breaks? Sure you can have multiple pistols, if you can afford it. But do you really want to have a pistol out of action when SHTF because a $3.50 part broke?