I have both, a sig rev. and a kimber ultra cdp II. If I were only to keep one it would be the sig. mine is like an officer frame with a commander slide. may be a bit longer than the kimber, but it never fails to feed. the kimber is pretty good too, but not as good as the sig. I also have 7 other .45 auto pistols, mostly 1911's but also a glock, xd and a Kahr pm45.these 2 are my favorites. like I said, if it came down to only one, it would be the sig.
Barry