My iMac has a firewire 800 port in the back, and I really want to take advantage of it. I would like to plug in an external drive and get the fastest speed as possible, as if the drive was local. The FW400 drive that I already have (maxtor onetouch II 300GB) is not as fast as I would like it to be. I would buy right now a G-Tech Q and plug it in the FW800 port if I was absolutely sure that the speed gain is significative. Is it? How much 'snappier' is it for accessing data and transferring files? Do I have to buy a 'scary raid' unit (2 drives configd as RAID 0) for the FW800 option to be worth it? Or is the internal speed of one drive enough to make FW800 better than FW400? I hope my question is understood (english is not my primary language) and that someone really competent and having tried it could answer me... I have tried googling this, and the opinions on the web are conflicting.