Okay, I'll bite.
I went with the Ruger P90. Chunky, clunky & a bit heavy ... but it's what I'd pick if limited to the examples listed.
While I really like a good 1911, the only examples you listed were either Kimber or Springfield. I'd prefer one of my Colts or a SW1911, if limited to a production example.
The USP would've been my second choice, except that if a pistol is going to be my only defensive handgun in extended, potentially adverse and harsh environmental conditions ... I'd prefer metal over polymer. Sorry. Polymer may certainly possess sufficient strength when used within its intended design in a pistol, but there are certain conditions involving potential impact situations and temperature extremes, just to mention a couple of instances, in which I'd prefer to have a metal frame.
The SIG with the DAK trigger isn't appealing to me. I simply dislike DAO-type triggers in some designs. If it had been a P220 with a TDA trigger, that might've interested me.
The Ruger P345? Sorry ... the 345 has yet to receive consistently favorable owner reports. Another polymer frame, anyway.
The Glocks? Another polymer frame, and the .45 ACP chambered Glocks haven't really ever appealed to me. Some of the early magazine issues have been resolved over the years, and the most recent trigger bar revision may have finally resolved some of the occasional light-strike issues sometimes reported here & there by some LE agencies. I just don't care for the larger frame's dimensions and ergonomics, though.
The XD? Haven't handled and fired a .45 ACP model yet. I've handled and fired examples of the 9mm & .40 S&W standard models, however, and while they were seemingly reliable and reasonably accurate, during the short term, I just didn't care for them. Just a personal preference.
The P90 may be a bit long in the tooth compared to some of the newer models, and it may be large, heavy, clunky and ordinary ... but it's also well deserving of its reputation for reliability and ammunition tolerance, too.
My number one choice isn't on your list, though ... but since I also own a P90DC from the early production days, and have fired enough rounds through it to make it a bit aged and well-worn, I have some amount of confidence in the design and its durability. Throughout the years, I've experienced and observed more feeding failures with various incarnations of the P220 model than with Ruger P90's, too. Not too keen on the newest Ruger 8-round magazines, though, with the folded-leaf style follower and lighter magazine spring, although I like the machined dimples in the feed lips to help prevent the top round from being displaced under recoil if harder recoiling +P ammunition is ever used (which I no longer favor, anyway).
WHAT?? USP, springer,glock. The overpriced Checky pistol is a good one,but something 'bout the price increase when springfield started marketing them doesn't sit well with me.