Wait for the rebellion...
...of the Excel Abusers!
Surprising move, really, that they've found themselves to be able to make do with Google's much sparser feature set compared to MS Office.
But if the missing features are no big deal for them, and on-line sync and collaboration is important, I can understand it.
MS Office is MUCH more powerful, but every time on-line access is involved, it's slow as mollasses.
Google, OTOH, does the snappy web experience well.
Completely ignoring the issues with going cloudy, of course.