I personally prefer external drive. Mainly because Cloud storage requires an internet connection. That is a very dangerous thing. Especially if you access your files at different locations. The privacy risk are enormous. A hacker can easily intercept your personal information through those networks. I prefer eternal drives because i can keep them in my possession at all times. Or i can lock them away for safe keeping. You can even encrypt an external hard drive. If it is stolen the thief will not be able to access any of your private information. External hard drives virtually eliminate privacy concerns. That is why i use them exclusively.