no offense but how can you argue cost of external when your advice has him up in the several hundred range? it doesn't seem like he is doing heavy pro level video. any standard ata drive that 7200rpm will do fine with video. digital video only needs 4-5mb a sec and any ata these days will do a few times faster than that.

overkill is what kills bank accounts. get what you need and no more. that is logical..
Mac mini C2D 1.83GHz - 2GB RAM - 200GB 7200rpm HD
Sawtooth w/G4 1GHz - 1GB RAM - SIIG SATA w/2x1TB HD
B&W w/G4 600MHz - 1GB RAM - 2x80GB HD
Sawtooth G4 400MHz - 512MB RAM - 40GB HD
Dell Ultrasharp 2007WFP 20" Widescreen LCD
2.94TB Total Storage