What cloud service do you use the most? I've been an avid Dropbox user but I recently lost all the temporary bonuses I have so I wound up switching the Microsoft's One Drive which gives me about 100 gigs to work with, not bad at all!
I am fairly new to the cloud service. I happen to like the one in Google, with your Google Drive. I also like the Microsoft One Drive. I am finding that the Cloud Storage is becoming useful, because sometimes, your computer crashes and this is like a permanent back up.
The main one I use is called OwnCloud. The reason I like it so much is because it is an open source script that you can install on your own server, yet still access it with their app. I just find it to be more secure because I host the files and they just give me convenient access to them.