Neither will import decently from iWork so I have to recreate my templates from scratch if I switch to Open Office or Libre Office. Open Office will open documents creating in iWork and saved as Office but loses formats and functionality. Libre Office will not even open Keynote docs saved as .ppt, although it will open docs created in PowerPoint.
I was seeking a different solution before completely giving up on iWork, because I certainly can't be going back and forth given their incompatibility. It looks as if Apple wants to drive everyone away from its office products forever, sigh.
Has anyone here actually tested Libre Office with collaborators in complex documents? By complex I mean reports with automatically generated Tables of Contents and indices, for example. Can you see and accept or reject each other's changes?