I also own some computers that were made to order.
A Sony Vaio Z2 (VPC Z2 190X) that I purchased in August 2011. The laptop itself is ultraportable, but has a Light Peak port that connects to a dock with dedicated GPU and Blu-Ray drive. What I thought was a fantastic concept - being able to purchase upgraded Power Media Docks for better graphics - ended up not being a thing. But, it's a good machine that I'm still using.
A few years ago, I started getting into the Apple side of technology, and decided to pick up a PowerPC G3/600 iBook to dual-boot OS X and OS 9 on. The seller decided to send me a G4 that can only run Tiger. But, y'know, whatever; won't complain about more RAM and an AirPort Extreme card.
When I got the laptop, the magnetic latch was a bit bent out of shape. I tried to bend it back but ended up breaking it off. Turning it on, OS X had been factory restored, and had no web browser, so I had to open a terminal window and download an old version of Opera (before arc.opera.com was purged). Then, I was able to download some files to get Classic emulation working.
As stated on my Tech Wishlist, I'd like to also have some sort of Tandy for 1980s DOS computering, a Color Classic (or equivalent) for early-90s Maccing and Apple II games, and a few others for the ace thetics.
When it comes to modern computers, I'd prefer to try building my own.