What do you mean Linux is "too unreliable"? It won't crash, it won't lose your data, it will keep 100+ day uptimes without a hitch... :-?
Sure the kernel won't crash but the desktops are filled with little glitches.
As for LibreOffice vs. MS Office, both will keep 100% of their formatting once you export to PDF, and keep 100% of their data if you use any open format like ODT, DOCX, or plain text.
Not true...the layout of a DOCX can be corrupted on save or load. Not very nice if your business partner opens your document later and discovers that it's messed up. It makes you look unprofessional and might even lead to a lost sale.