Presumably, OS X 10.11.1 fixes some problems with Office 2016 when you are running El Capitan. I am two-minded when it comes to Google Docs and Office 365. On the one hand, Office 365 is an offer you cannot resist (especially the academic pricing). Microsoft Office documents are a fact of life, Office 365 gives you continuous updates and 1TB of OneDrive space.

On the other hand, last time I compared them, Google Docs' collaboration story was far better. Collaborative editing in Docs is really smooth, while in Office it was hit and miss.