Let's just hope the next Ubuntu LTS version doesn't pack up a "doomed to be buggy and perpetually outdated except security fixes" version of KDE :| ...

Choosing to use Ubuntu 16 LTS, I gave up considering KDE as an option after trying hard to put up either with the official repo one or a newer unofficial one (both were buggy and unstable, and lacked essential features to me like Win+<number> task switching shortcut that is available in latest KDE, and especially combining this with drag-and-drop freely reorderable taskbar entries to actually enable my "standard" worflow that I can use fine in Windows 10, Unity, or Xfce+custom dock).

Hope the Kubuntu guys take care not to shit the bed with the LTS release (because their non-LTS one were always fine, like in not just up to date as expected, but waay more stable too!)...