I should receive my wife's new iMac 21.5 i3 3.2 1 TB HDD system before Aug 20th. Soon after (for her birthday), I plan to get an external drive (Backup Drive) for her new toy. Was thinking of the WD "My Book" 1 TB / Mac model. re: http://www.macworld.com/reviews/product/405169/review/my_book_mac_edition_1tb.html If wondering, it will be used for weekly "background" data file backups. Thus, USB 2.0 is "good enough". Quality / "Ease of Use" and low cost is higher criteria then data transfer speed. From your experience, is this device any good? Better external backup drives instead? thanks. .