I use my PC for flight simming (X-plane 11, DCS), content creation (Adobe Premiere, Photoshop) and your average PC jobs (MS Office, browser). I prefer a no-nonsense, minimal look (so no RGB LEDs) in a smallish form factor (mini-ITX) that is as quiet as possible. No water-cooling for me as I do not like the extra components that come with an AIO: they add extra points-of-failure, the pump needs more electricity than fans and produces sound. I am a big fan of Noctua fans and coolers, as they are the most silent and efficient air cooling solution i.m.o.