My first mac will be here in a couple weeks (iMac i7 w1TB), so I'm currently looking for a Firewire800 external drive for backup. I've read a lot of comments, and continue to waver between a WD or Seagate, or maybe an OWC or G-drive or LaCie, or maybe build my own! Anyways, I've zero experience with Time Machine - is this what I'll want to use for my backup? Will a 1TB external be sufficient? Note that I only have maybe 200GB in photos/music/video (maybe not even that much - yet!). I guess my real questions are: (1) should I partition my iMac hard drive? (2) will a 1TB external be fine (for quite some time)? (3) Is Time Machine worthwile, or should I look into SuperDuper, etc? And I guess HD suggestions are what's relevant for this forum, but I hate to ask an often-asked question. thanks..