Recs.
Updated
A comprehensive solution for day-to-day office needs, with efficient and open-source code.
SpecsUpdate
Pros
Pro Ribbon design
Since 5.3, LibreOffice offers a Ribbon design view (similar to Microsoft Office) (check here).
Pro Good Zotero integration
LibreOffice works very well with Zotero. The integration of the Zotero plugin in LibreOffice is a breeze, citing while writing and generating the bibliography is just a click. Also good since you need to coop in an (MS) world: Libreoffice and Zotero cooperate very well to make sure your refs survive a "Save as" from one file format to another (e.g. docx to odt or the other way around). Basic (open and free!) tools is your in the market for this...
Cons
Con Track Changes needs to be improved
Collaborating on a single document is difficult. Track Changes makes the document hard to read as both edited and deleted text is displayed, it's not possible to print comments, tracked differences between document versions are sub-optimal and there's no system for accepting/rejecting changes.
Con Many user annoyances and malfunctions which lead to loss of work and time, often not intuitive
Recommendations
Comments
Flagged Pros + Cons
Con Ugly buggy horrible
Just one of the worst pieces of software I've ever seen. First thing to get removed in a new linux install.