Hello, I have a powerbook G4 and I'm planning on getting an external HD because I'm running out of space on my internal HD. At first I was looking at getting a mobile HD, but I don't travel that much to really need it. Now I'm looking at the LaCie external desktop drives and I'm wondering what the difference is from the LaCie d2 Hard Drive Extreme with Triple Interface and the LaCie Big Disk Extreme with Triple interface? The only thing I see is that the Big Disk comes with a Built-in RAID 0...can someone explain what this means? So what are the differences, which would you get, and are there other brands that I should consider? Lastly are there any new technology HDs about to come out that I should wait for? I know the WD internal raptor spins at 10rpm, should I wait for an external to do that and then buy...or it that not in the near future? Is it even that beneficial? Thanks for the help, I'm trying to learn a lot and become an informed buyer.