Put me in with the anti-W10 crowd. I use it begrudgingly because my laptop can't really run 7 well; a lot of drivers are missing and/or wrong.
Windows 8 and 10 always made me feel like I was using a half-completed Mac-wannabe on top of a Windows XP/7 core. It just never really felt cohesive. That's probably because it's still unfinished with a bunch of legacy crap (control panel, various UI elements/modes, compatibility tweaks) floating around. I've seen obscure and bizarre performance issues on countless systems, though they were definitely more prevalent pre-1709. The two most obnoxious ones were random and persistent high disk usage, and various issues with changing power state (usually, it won't wake up, or won't get the graphics card going during waking). I've seen this on contemporary machines that shipped with W10 as well as upgrades. Then there were things like user profiles fucking themselves randomly, programs disappearing, and all sorts of shit like that which basically couldn't be fixed without at least a "Reset." I can't tell you how often those resets failed for some reason anyway. Anyway, that basically sums up my nine months at Geek Squad. (Actually, I could spend hours complaining about incompetent management, assholes in their twenties picking on the 19-year-old, and so much else...) Then there's all the bonafide bloat, the attempts at strongarming users into Microsoft's ecosystem (say what you want about the Apple ecosystem; it's fleshed out to some degree), the spyware, and countless niggles that power users will encounter daily. Oh, and the ongoing experiment to add *nix-like permissions to Windows and NTFS has mostly created extremely obscure bugs.
Anyway, I have an ASUS ROG laptop from 2016, upgraded with a 256GB SSD hooked up to a USB Hub with two WD Bookshelf drives full of garbage, and placed on a small Ikea bookshelf full of LPs. Next to it, on my desk, a 24" ASUS monitor that I bought from some poor guy down on his luck on Craigslist (I feel really bad about that actually), a HyperX Cherry MX Blue keyboard (vendor coupon), an Insigna Microphone (store-brand accessory/cost-based employee discount), and a SteelSeries Rival 110 Mouse (accessory/cost-based employee discount) on an Insignia mousepad. As my second monitor, I have... a hand-me-down 2009 iMac. I use Synergy to remotely control its keyboard and mouse, and it's almost as seamless as a plain old extended desktop. It works well enough for playing video on its nice screen and has decent enough speakers, and it can be useful for some obscure Mac-centric tasks I might run into.
I'm pretty content with this setup right now. I need to run a proper hardline to my room, and also move the router (again... long story). For right now, I generally use a hacked WRT54G as a wireless receiver for the computers. Yes, I'm serious. The NICs really don't like the amount of attenuation in my room.