[mel919]

As a former OneDrive user the service was terrible, I've had issues with sync and all of the clients - web, mobile and desktop. I've read similiar opinions. From my experience the quality of OneDrive is really poor; it's not really a competitive product. Results my vary and most certainly will but that's the way I see OneDrive. Dropbox on the other hand... just works.

[alexval]

OneDrive sync has improved dramatically over the years. It's still not as good as dropbox, but OneDrive has this new popup window that shows you a bunch of information about your files when they sync and are updated. That part of the UX is better than dropbox.

[microtonal]

I tried OneDrive again a couple of weeks ago, since I have an Office 365 subscription anyway. Sync was still slow for me compared to Dropbox, sometimes does not sync everything correctly, and used 700MB of memory for a nearly-empty OneDrive.

Dropbox just works and that's worth 10 Euro per month to me, it saves me heaps of time.