I need to buy a hard drive so I can back up my 160gb internal HD, my 120gb external hard drive and possibly another 250gb internal HD. I'm was planning on buying a 500gb external drive for backup, which should be enough since I keep 30gb free on my internal drive that runs the OS. I've been touring for 6 months and just returned to home and internet access, so I'm out of the loop. Any suggestions for a good external hard drive? I saw an ad in MacWorld for a 500gb drive from OWC for $379. Is this a good deal, or would I be better suited buying a Lacie drive?