For fact any company can turn out excellent examples of 1911s, and horrid examples of 1911s. That's just life and manufacturing. I've never owned a Springfield 1911, and so can't speak from experience. I have owned 15 Kimbers and still have my Warrior. Fully 33% of my Kimbers were factory defective and had to go back to the factory bewteen 1 to 2 times each. One needed to go back a 3rd time, but I sold it instead. I also own several Colts. None of my Colts has been defective. See sentence #1 again. Just because I have not had any defective Colt doesn't mean they don't exist.
Whichever you buy, give it a good once-over before you buy it. I suspect what you will get in such a thread as this is 99% opinion, and less than 1% hard-fact. Most people like what they own. If you use the search feature, you will find that this topic has been done to an unimaginable degree.
I suggest buying a used 1911, face-to-face. Take it to the range and put 150 to 250 rounds through it with no cooling down, just adding oil bewteen 125 to 150 rounds then continue. Best test there is. I did such a test with my Colt Series 70 reissue...in 3,000 rounds it never had any failures of any form. The 1911 adopted by the military had to pass such a test with 6,000 rounds. It was cooled every 1,000 rounds, and oil added around every 150 rounds.
JMHO.
Doc2005