Having exceeded my previous back up solution, I looking at getting an external hard drive ranging from 500gb to 1tb in capacity. I've been looking at the WD My Book Studio Edition as I like the Firewire 800, capacity and price, $259 on Apple, however the reviews are not so good and I have heard mixed stories on the reliability of WD drives here. I plan on partitioning it for Time Machine and using the other half for an Aperture Vault/Storage. Are WD reliable and does anyone have any other suggestions on external HD under $300 and available in Canada? Thanks!