I am interested in picking up a 1911. What I seek is a collectible that I can shoot occasionally. I like shooting USPSA and 3-gun competition, and occasionally do the latter with an M1 Garand for fun. I'd like a used/rack grade 1911 or 1911a1 to have for reasons of collecting and for infrequent competition use, mainly so I have a fun gun that fits the WW1/WW2 theme. By infrequent, I'm thinking of probably one or two three gun competitions a year and/or one or two USPSA competitions per year.
My main question is about longevity. I'm seen a bunch of references of how both 1911 and WW2 era 1911A1s were not heat treated as modern slides are, which results in slide cracking at low round counts. Is a vintage 1911 a good choice for me, or should I instead be looking for something recently made like the Colt WW1 reproduction or a series 70?