I own several series 70 and 80 Colts, and a couple of Kimbers, including the Ultra Carry you mention. Both makes are well made, but I would give the edge to Kimber for fit and accuracy. The series 70 Gold Cups have that beautiful Colt Royal Blue, and are almost as tight and accurate as the Kimbers. No experience with the newer Colts. I have heard, for what it is worth, that some people have had problems with the shorter (Ultra / Officers) 1911's not being reliable, but I have about 700 rounds thru my Ultra now with zero malfunctions. My gun has the Crimson Trace laser grips on it, and they work great. I was never a fan of bulky add on lasers, but the grip style add no bulk, and will fit any normal 1911 holster.
Larry