[Coda]

I used to like OpenOffice. It wasn't great, it didn't always do a great job of converting Microsoft documents, and it managed to be even more slow than Microsoft Office (and it took me two solid weeks to compile the first time I built it from source). But it was free, and it worked well for creating new content, and it worked on non-Windows computers.

Then Google bought Writely.

Google Docs is now head and shoulders better than OpenOffice for most things that you'll need to care about. It has all of the benefits you listed, plus it loads faster and runs faster, has better compatibility with Microsoft documents, and has a nicer user interface (in my opinion) -- plus you never have to worry about losing your files or transferring them from place to place, because you can always just log on from any web browser to get your work.

Sheets is better than Calc ever was, and has been since it launched. Admittedly Calc was FASTER than Sheets for a long time just because browsers weren't able to keep up with it back in the day, but that's no longer the case with modern browsers.

Slides blows Impress out of the water.

I'll grant that OpenOffice Draw is currently better than Google Drawings, and that there's no Drive equivalent to OpenOffice Base. But speaking as the kind of user who would actually make use of Base... the sweet spot where Base is more useful than a spreadsheet but easier to use than something more powerful is... really small.

So... Give Drive a try! :P

(Full disclosure: I work for Google, but I held these opinions before I ever applied here.)