You could try Linux Mint Debian Edition (LMDE) it has timeshift installed in the live iso, useful to restore a system when it’s unbootable. Anyway it doesn’t come with KDE but Cinnamon or XFCE.
For me Debian or LMDE is good for a home server due to not continuous package update, just major security an important ones.
For a Deskop or laptop in my opinion Fedora KDE or Gnome is the best experience.