USMC Infantry '03-'07... I don't hate the M9 (Beretta 92) as some report. I grew up with rifle and shotguns, knew how to shot pretty well before the Corps, but I had never shot a pistol other than sporadically until then. I learned to really shoot a pistol on the M9, so it holds a special place in my heart.
With that being said, I love a 1911. Don't currently have one (certainly have had several), but it's on my list of things to re-acquire. I have a Jericho 941 (basically a souped up CZ75) that I like, a Kahr CW9 that I carry (kind of like, good pistol just not my cup of tea other than it's comfy to carry), and a Sig P227 and P290 that are issued and carried at work. If I had to rank my favorites... 1911, Beretta M9, Sig P220 (or 227), CZ75... my Kahr has never so much as FTF after several thousand rounds so I have to give it some love. It's reliable, accurate, easy to carry... just not my favorite platform.
Then, of course, I love Ruger revolvers. Have a 6" security six circa 1976ish. I want a Super Redhawk in .44.