

I prefer Only Office (Desktop Version) to Libre Office, because
- it does not look like over 20 year old Office 2003
- it uses docx and xlsx as native format which makes it easier for noobs
I heared Only Office has some Russian connections. Otherwise it still is Open Source.
Seems ok, but it seems to be a dowgraded version from a commercial product. If there is a good Open Soruce product, I prefer that.