Libre is the most featurefull and compatible (with Microsoft Office) but there are things Office can do, that Libre will not: For example embedding fonts in documents (feature protected by patent), and a lot of bespoke applications being implemented in VBA in Excel or Access --- for example I wrote an adventure game in Excel, and I can't do this in Libre Office. (Edit: At one time, people were commonly using Excel with VBA as a 'cheap' alternative to developing a custom app in Visual Basic. Cheap in that most of the finance guys could 'program' it themselves, without having to call in a coder.)
(Edit: I say this not to put you off, but to determine exacly what/why you use an office suite for --- is it just the golf club newsletter or do you have a custom Excel app that handles your membership, accounts and league rankings? -- Libre can do that, but you will have to rewrite it and redo the GUI).
That aside, that's way beyond most people's expectations of Office software and I guess if you did that , you'd be asking about it specifically.
I personally have switched to Google's cloud office. No worries about backup and synchronisation, and it works well enough to bash out some quite good documents. Plus there are a lot of plugins: there's good plugins for google docs powerpoint that are superior in some ways to Powerpoint.