Wilson Combat is excellent. I've shot some pistols they've done, and I've used their 1911 magazines in the past (I switched over to Chip McCormic though).
Avoid Kimber.
I've never heard this, and I'm quite surprised: All the work I've ever seen by Kimber, and everything I've heard or read about Kimber has led me to believe otherwise.
Mark
Problem I heard on new Kimber is the crap steel.