The HD on my iBook G4 is dead. I want to buy an external portable HD to permanently start up from. I understand that with a firewire connection I'm able to do that. I have narrowed my search down to the laCie 80G Bus-powered and the smartdisk firelite 40G(which is considerably cheaper). I've read some very good reviews on the laCie and some not so good, some moderate ones on the firelite. I would like the external drive to be powered without additional adapter. Does anybody have experiences and recommendations?? Thank you.