If you want a ."40" on the 1911-platform, just get a 10mm 1911, and then get an aftermarket .40 barrel (say, from Bar-Sto) and have it fitted to the gun. Shoot two cartridges out of one gun using the same mags, although you may well find that you like the 10mm set-up better.
.40 1911s have a well-deserved rep for finicky feeding. The .40's COAL is shorter than the 10mm AUTO's, which has a nearly identical COAL to the .45acp, the design-specific cartridge for 1911s. That's why the 10mm 1911s feed fine. Guys who shoot .40 1911s in local matches
long-load the bullets of their reloads (almost to 10mm length) to overcome the feeding/jamming issues. Be advised, though, that because the 10mm's recoil output is so much greater than the .45, a 1911 chambered for it benefits from certain additional items, like XP recoil & firing pin springs, EGW f.p. stop, etc.
Anyway, it's another option to consider.
You could always go the other way too, where if you find a bargain on a lightly-used .40 1911, you could shoot it a while and if you don't like it, just have a competent 'smith ream out the .40 barrel to 10mm specs.
With that mod, some XP springs, and several Delta Elite 10mm mags, you've just upgraded your gun to a much more versatile cartridge.