I own two western digital hard drives and I find them very useful. I was initially introduced to a hard when my laptop crashed and lost lots of work. A friend suggested that I should use a hard drive to back my work up. The western digital hard drives were definitely the most attractive and slender looking hard drives that I think are available in the shops. PC world have amazing deals on the western digital hard drives and additionally offer a one year warranty where you can hand it in to the store if anything happens. I would suggest that this would be a useful product if you have lots of unused files on your computer or laptop that take up lots of memory but are not used.
Also maybe buy it in a shocking colour, I have a bright red and lilac one so that it stands out when I look for it in my room!