Its not HD so yeah. Mini DV, you'll have tapes, you'll never loose your footage if you delete it on the computer (and don't tape over it). That video you posted looks like its captured with USB. Firewire is the way to go. And yeah if you capture with a firewire through imovie theres no problem editing it on a mac.
I'd get it over the aiptek because i don't trust any of these flash memory and hard drive memory based cameras. If you have to goto some kind of drive storage over tapes it should be p2 cards, no one on here is affording a camera that uses them, or the p2 cards themselves...