hey guys, i'm in a market for an ext. HD would love any suggestions or recommendations... what i have: 12" PB with 40 GB HD. it's got about 10 GB left in free space. biggest collections are: iPhoto collection - 2 GB (constantly increasing...) iTunes collection - 15 GB (pretty stable...) iMovie collection - 2 GB thus far, soon to increase (i don't have a dig. camcorder but i like to make movies from photos.) i realize it's not much, but i'd like to back them up or move them off the int. HD. what i'm considering: i can get either a large HD (~100 GB) that runs on AC adapter or a smaller HD (~40 GB) that's fanless and can be powered by firewire cable for about the same price. (around $200) i do not need the very fast rpm or a big buffer. (4200 rpm and 2 MB buffer is enough.) i'm personally leaning toward the micro HD since i don't think i need much more than 40 GB, if that much. questions: 1) what manufacturer is good? i've seen wiebetech and lacie. i've seen lacie d2 HD and it's nice. wiebetech combo+ drive is also pretty nice, quiet and bus powered. i've also seen some ads for Other World Computing's Mercury on-the-go HD. that one looks really cool. anyone with experience? any brands to avoid? 2) what vendor would you recommend? 3) my gf has a dell with usb. if i get a dual connector HD, she'll be able to back up her files, albeit at usb 1 speed. how painful is this? she won't have much to back up, probably a few GBs... 4) any other comments or suggestions are welcome! EDIT: other option i could consider... if i can use it well, a DVD burner wouldn't be out of the question. i don't think i can run iDVD because i don't have a superdrive, but how else would a DVD burner work? would it be a viable backup option?