I've been neglecting my back-up situation for too long, and now that I've upgraded to Leopard with Time Machine, I figure it's time to start backing up my stuff. I hear a lot of talk about RAID, and the impression I get is that it is most useful for video editing setups where massive storage and quick retrieval is key. Is this a correct assumption on my part? As a print designer, my files can be large, but not nearly as large as video, and my need for ultra fast storage and retrieval is negligible. So would I be better off simply getting a single large capacity external (say 2 or 3TB) with Firewire?