Back when I decided which cloud storage to use, all the big ones were at 1TB and dorpbox was the most expensive with the least features, while microsofts offer included office 365 for nearly half the price.
The main advantage for Dropbox is that file sync works flawlessly. I've had issues with Onedrive and Google Drive in the past. Maybe they fixed those, but I can't trust them anymore.
Agree. I am forced to use OneDrive when I do consultation work for one of my customers, still works like crap compared to Dropbox with slow syncing etc.