There's much debate about internal vs external extractors.
Problem with 1911's is that they were designed for internal....and no one company/maker has hit upon the "This Will Work" design for the external type.
Most all "normal" 1911's have internal extractors. They could require some tuning, but in theory, bone stock in-spec 1911 extractors will always work, given that the barrel, ejector, slide, etc is all in the original spec.
Start with a used Colt Series 70, or other older Colt...they work. Grow from there.
Just my opinion...
If you want a good carry piece in 1911 flavor, well...there's a ton out there, most good. It helps..shit, pays dividends...if you're already familiar with the platform. (Think wanting to buy a shorty AR...it helps if you do the work and research first to see what potential problems may be)