Call me close-minded . . .
To me, when I think "45 ACP," I think 1911. And when I think "1911," I think 45 ACP. The two are one in the same in my head. The one noble exception would be the Thompson sub-machinegun, of course.
I'm also not a fan of compact 1911's. 45 ACP, being a low-pressure round, needs the 5" bbl to extract all the ballistic performance it can. Just my opinion.
So I recommend a full-size 1911. I have three. A Colt (from 1984); a Kimber; and a Springfield (both less than a year old). If I could only have one, I'd choose the Springfield without any hesitation.