Seriously, Kimbers can be an addiction. I have a Kimber Ultra Carry II, and plan on adding a full size to my inventory soon.
With my Ultra Carry, I had a few hiccups during the break-in period (First 300 rounds or so), but since then no problems. It eats whatever I put through it. I will say that I have never put more than 200-300 rounds through it without cleaning it after. I think it's more of a relaxation thing than an actual necessity, but I tell myself it needs to be done.