I am currently editing my projects using iMovie on my 20 inch Intel iMac with 1gig of ram and I think 160gig hard drive. Anyway, I am looking for more storage and heard editing programs run faster if you have them on the external hard drive. I am looking for a decent amount of space for a decent price. Does the speed of the drive make a difference? Any suggestions? Maybe white to match my Mac? Thanks. Edit: I don't know if it matters, but I connect directly form my Sony HDR-HC3 via firewire - if I attach a new hard drive do I choose to save the clips to that drive? Is this even worth it? Thanks again.