Did you point out that one bad experience does not make the product bad, then go on to offer your own personal experience as proof of the opposite?
As I said previously, there's plenty of evidence of Mac users have had a lot of problems with mybooks, the apple store for one is littered with bad reviews.
I'm not saying all of the mybooks are bad, I don't know that, just pointing out that listening to someone who offers their personal opinion as evidence ('good cos i fink so' effect) is ill advised. There's a whole internet of reviews out there for smart shoppers. Yes, unfortunately in my case I bought this piece of garbage from a local shop in a rush before moving abroad so did not take my own advice.