Kimber Custom II - first gun. I like shooting pistols more than anything else, and I liked 1911s better than anything else.
FNP 45 - Bedside gun. Thought the extra capacity and light rail combined with the irrelevance of size would be great for that role.
Interarms PPK/s - I love all-steel pistols and I was looking for something smaller to carry as a backup or when dress clothes couldn't conceal a fullsize 1911.
S&W 629 - Read a lot of Elmer Keith, read Unintended Consequences, and got hooked on shooting my 1911 at 100 yards. Wanted a gun more suited to that range and beyond, wanted a .44 so bad it hurt.
Les Baer Premier II - After a few years and a lot of practice, I found I could outshoot my Kimber. Wanted a nicer 1911 that could outshoot me, be used in Bullseye matches on the side. The Kimber now wears a type I Marvel kit and is a permanent .22 Bullseye gun.
Kimber SIS Ultra - Came to the conclusion a few months before that the 1911 is the perfect platform for me. Wanted something based on it for backup/dress carry. Chose the SIS out of all the 3" 1911s because its all steel, bit higher quality than RIA/SA all-steel offerings, and had more "serious" features than the Kimber Eclipse Ultra, which is also all steel.
6" SVI 2011 - Did not like the FNP for a variety of subjective reasons and wanted to move all my defensive guns over to 1911-style platform.
S&W 64, customized for PPC - Around the time the Infinity came in, this beauty showed up in the local gun shop. I have a soft spot for heavy guns, purpose-built custom guns, and unique guns. This met all those criteria, and I found myself with an FNP I didn't really want - sold it and picked this up. The first gun I've ever bought with no real purpose in mind, and I haven't regretted it one bit.
My next purchases will be a 5" and officer-sized SVI 2011s. I've found they fit me even better than traditional 1911s and I shoot them better. The far superior build quality and capacity make them attractive, as well, so I want to move all my carry guns over to this platform.