Yes, I was referring to Microsoft Office in the comment.

I've used LibreOffice for years while running Linux before. I noticed perfomance issues compared to Microsoft Office on Windows that were especially bad for spreadsheets.

I consider myself to be a power-user of MS Office. Last time I used LibreOffice, it did not have many of the features that I used extensively (especially in their PowerPoint analog). In addition, the interoperability between MS Office and LibreOffice was not great.

Lastly--there isn't an adequate OneNote replacement on Linux. Evernote doesn't cut it for me. This is really my killer app--if there was a good OneNote on Linux (non-browser, a native desktop app), I could deal with the other issues as they came up.