Hey gang, Just ordered a new, 27" Fusion. I decided not to go with the Time Capsule, but with Airport Extreme instead. Two large functions in one package makes me nervous... So, I'll need a Thunderbolt backup drive now. My computer will have 1TB and I'll be doing some home video and stuff, but don't expect to max it out. What advice do you have for a backup (Time Machine) drive to go along with it? Thanks!