I bought that WD one from officeworks. It is a bit slower than my other one, but I just plan to fill it with episodes and movies, and then leave those on it. I have a smaller faster one (about 300gb) that I'll use for regular backup.

I'm very happy with it so far - it's plug and play and it's a great size and it's pretty! Plus, it was less than $180, so I figure I can justify buying a better one when they reduce in price.