Dear Friend,
You must be looking for stability, security and how easy is to use the software of your cloud backup provider.
Best solution is to register with an online backup service so you can backup your files secure to the cloud remotely because even if you backup to HDD you are in a danger to still lose your data except hat is expensive to have hardware to backup because they get destroyed and the funny thing you dont know when it will happen!
I use the backup-easy website that offers Asigra software in really affordable prices. Asigra DS mobile software is stable has four level of protection and is so easy to use. Is awarded solution and can setup the software to backup your vital folders and data automatically. You can see how easy is to install and secure the same time at:
http://www.youtube.com/watch?v=GNCYY5V-GQc
Look pricing :
http://www.backup-easy.com/backup-pricing-packages
For home users and they give out more than one PC license so you can backup more than one PC at home or office. Their software has four level of security and does not throttle CPU power.
I used many cloud backup solutions and this is the one i use because its reliable and easy to backup automatically when you change files.
You can calculate which package you need using their online backup calculator:
http://www.backup-easy.com/instant-calculator