For the records:
I want to leave LibO for a while, I want to try if I could live without some of its annoyances (including its slowness). Now I have been on OOo/LibO since OOo m580 or what the first "prerelease" was, so most of my "important" files are in .odt and .ods. Ironically, choosing these open formats leave me quite unable to switch at all, as none of the concurring products are able to handle OpenDocument nearly as perfect. While .odt is beginning to spread, .ods is still too exotic, as it seems. I had a lot of fun trying to open my shoppinglist.ods file in Gnumeric, for example, which natively supports .ods but was overburdened by cell borders, dynamic formatting and multiple pages. So I had dropped the urge for .ods support, but still most applications failed. SoftMaker 2012 even failed to display a simple, multi-page prose .odt file correctly, wtf?
So I'm on WordPerfect Office X5 now. Yay.