I've used it extensively when compatibility with a bunch of MS Office users was not a concern. Never had any trouble opening other peoples' MS Office files, but

I've used it extensively when compatibility with a bunch of MS Office users was not a concern. Never had any trouble opening other peoples' MS Office files, but I wouldn't trust it if I had to send lots of files to people. For home use it's superb - even my computer-illiterate parents are using it exclusively.