Yes, I went through a one mongth trial of Office 365 because the price seemed good and I really wanted to like it.
On OS X the OneDrive client had problems synchronizing my 80 GB archive - refused to synchronize files containing characters not accepted on Windows (like ":"), crashed several times and it was also saturating my network bandwidth. To make matters worse, OneDrive doesn't have basic functionality, like a log of what happened (files added, removed), let alone a 30 days version history. So I have to trust that their shitty client is doing the right thing.
The way I see it - yes, the Family pack is cost effective, but I'll never store 1 TB of my data on OneDrive without having logs, versioning and a client that does not suck for both OS X and Linux. I also think people get to be irrational about pricing - the price of 1 TB on Dropbox or Google Drive is as much as 2 Starbucks coffees.
On Android, Office wasn't available for my Nexus 6 (Android L) until 2 or 3 weeks ago when it was finally released. Gave it a try and it's too bare-bones, plus it had problems displaying documents from work. I expected it to work well as a viewer, but it doesn't.