I never thought about it before but I use upstream and downstream without much though. For my personal devices and containers I use Fedora but when it comes to servers and VMs I use Debian for its stable nature.
I also run Linux mint in my homelab with pcie pass though so it functions like a normal desktop.
When you’ve hopped between all the major branches of linux you kinda realise they’re all the same thing with different package managers anyway
That said you can pry NixOS out of my cold dead hands