I’ve not spent appreciable time with Kimbers but I’ve seen enough posts on other forums of broken MIM parts. I do have the original parts from my S&W, also MIM, and while people constantly parrot the “good MIM and bad MIM” mantra, even the best of it simply does not belong in certain areas. There’s more to metals than absolute strength, there’s also toughness. Buying a 1911 that doesn’t compromise in so many critical areas is, IMO more likely to yield a better overall experience.
Below for comparison are a few comparison photos. Keep in mind the Smith had less than 500 rounds through it when these parts were mothballed whereas the Colt had seen north of 4000 rounds. The wear would indicate the opposite to be true, and this is simply comparing MIM to cast in some cases.
Parts I replaced in my S&W to feel comfortable with it being a defensive weapon or to improve accuracy.
Some comparison parts between Colt and S&W.
Smith top, Colt bottom, MSH.
Slide stops. Colt right, Smith left.
Thumb safeties. Colt top, Smith bottom.
That’s why many here are saying chose “other”.