I've been waiting for a small-socket/consumer line 8-core for several years, so with the release of the 9900k it was finally time to splurge.
This is a dual-boot Hackintosh (which ruled out Ryzen) for gaming (windows) and software development (both Mac and windows). Each OS has it's own NVME SSD (windows on the WD, macOS on the Samsung) with the 1TB a shared storage drive. Because I planned from the start to run macOS, I was forced to go with Z370 (the intel CNVi wifi on z390 will likely never be supported in Mac) and the only z370 mITX board I could find with dual m.2 slots and a mono block available was the Strix.
I've loved the H200 since I first saw the 'i' version, but I also knew the NZXT cam software was likely to never be supported on Mac, while corsair already has an early release of iCUE for Mac, along with an open source tool to program the commander curves on mac.
I also took this opportunity to finally dip into the world of custom watercooling, which turned out to be way more work (and more expensive!) than I anticipated, though ultimately, I'm glad I did; I love the final aesthetic! While the H200 is fairly watercooling friendly, I did have to drill two holes in the cable management bar (for bulkhead fittings) to fit the full-size ATX psu and the bump down below.
Figuring out the drain valve was a chore; I tried 3 or 4 different valves and locations until resigning myself to just using more fittings to be able to articulate the drain out of the way of the side panel.
I've been through four iterations of the loop already, largely because I was just never happy with my bending, plus I cracked a tube when I swapped to the corsair fans, and most recent, when I switched to the 'RGB' res and added the barrow flow meter I swapped back to CPU + GPU in parallel, (largely because of this gorgeous H200i build on reddit) and replaced some of the worst bends with more fittings instead.
With such a small loop the cooling is decent, but not amazing; for daily use I'm running 5.0 all-core, with -2 AVX offset, LLC @ 4, adaptive vcore @ 1.285v (peak voltage hits ~1.3 with the LLC, so a fairly typical 9900k silicon lottery loser.) The 1080ti is also basically just 'average' with boost bouncing between 1980 and 2075 core clock, and the memory running at +500 for 12ghz effective.