Got it Saturday!
It's in really great condition - big thanks to Motorwerks of Barrington (just outside Chicago) for delivering a beautiful X5M to me. Carbon Black is a gorgeous color - love the blue hue in the sun. The Silverstone interior is completely unpractical... and I wouldn't trade it for anything else!
Service history report my broker had pulled shows NOTHING except regular maintenance performed, so I plan to take it in sometime in the next couple of weeks and ask for them to take a look at the driveshaft. That, plus two issues I've encountered so far: 1) Comfort Access isn't working for some reason (new batteries didn't resolve the issue) and 2) Slow to start in the morning (battery?)... and when it does there's a short but ear-splitting screech. No rattles/clunks/weird squeaks from suspension or rear latch, but there is some noise when turning from the center console.
Thanks to everyone who's piped in!