[Kadin]

Interesting, as I have had the opposite experience. There are lots of documents that I have to work with -- most created originally in Word 2007, I think -- with very intense formatting, forms, embedded charts and other crap, and Google Docs makes a total hash out of them.

LibreOffice, OTOH, pretty much looks just like they did on the original.

The one issue I've run into is font substitution. The fonts that LibreOffice uses by default if the actual Microsoft fonts aren't installed are not, at least IMO, very good substitutes. They don't look great to me, but worse they seem to be very different in terms of character/word width, so everything gets reflowed to hell and back. But assuming you install the actual MS fonts, the results seem quite good.