I have the Kimber stainless aluminum compact, it is the first 1911 I've owned. It is my favorite firearm. here is its history:
Out of the box incredably accurate. first 600 rounds not a single problem.
Around the 600 round mark I tried various boxes of premimum HP carry ammo as a function test. The kimber ate everthing with the exception of Federal Personal Defense hydra shock jhp 165gr. For some reason (probally had something to do with the harmonics of the gun) the firing pin stop would drop down and catch the hammer while firing this stuff (4 times in a box of 20 rounds) I went on to fire 100s of rounds of other types of ammo after that with out any trouble. I called Kimber and told them about this and they sent me a new firing pin, firing pin stop, and spring to see if it would stop the problem (no questions asked, no proof of purchase ect.) I never tried it (decided I liked Gold Dots better anyway).
At a little over 2000 rounds I sent the gun to Kimber and had the slide and frame "Melted" (I was starting to shoot IDPA). The gun came back to me in about 10 days work was excelent.
At around 3500 rounds one of the plunger tube stakes (feet) sheared off. The gun was still able to fire but the plunger tube was loose (this holds the detents for the slide lock and safety) I sent the frame to Kimberfor repair and got it back in less than a week.
Next 500 rounds, one stovepipe, when the gun was fired without a magazine in it.
Then a couple of months ago the acid test. A weekend Tactical class that required around 350 rounds, followed the next weekend by a IDPA match that required around 100 rounds, and just for the fun of it around another 100 rounds at the range. No cleaning for around 550 rounds, No problems.
I'm now at around 5000 rounds and the gun is still able to shoot better than I can.
As I said it is my favorite Gun
Theo