As far as cloud storage goes, I use Google Drive. This is simply because it is convenient. I already have an account with Google. However, which one should I be using? Which one has the better features?
Google Drive
Pros:

- Media streams without having to download it.
- Drive has better compatibility than Office
- Google Docs user interface is very clean.
- Google Docs can be saved in various formats.
- You can decide which items you want synced, and on what devices they go on.
- When you upgrade to any paid account within Google you get an addition 25GB of Gmail storage.
Cons:
- You start out with only 5GB of free storage.
- It is $60 for an additional 100GB of storage per year.
- You can't earn free space by referring friends
Skydrive
Pros:
- You start out with 7GB of free storage.
- It is $50 a year to get 100GB of additional storage.
- The office web application looks VERY similar to that on the desktop version.
- You can use Office for free online, and it allows you to move back and forth between online and offline editing if you have Office installed