My prehistoric Intel Atom box running Kodi just popped after nearly 10 years of daily use 
But that means it's time for an upgrade and a bit of tinkering..
I have a lovely Mini-ITX case that I want to keep (it looks good under the tv!), so I kinda want to stick with the Mini-ITX form factor if I can.
Any recommendations? I'm looking for something quiet (ideally fanless) and it being tried-and-tested, well-supported hardware would be a massive benefit. Ability to do 4k would be nice, but not essential.