I am thinking of buying the Newertech Guardian MAXimus, but I do not know if I should buy the enclosure with hard drives from OWC or just buy the enclosure and put drives in myself. The 4TB model is $400 and the 6TB model is $600. That comes with a 3 year warranty for both the enclosure and the drives. If I go the DIY route, the 4TB will be about $350 and the 6TB will be about $530. By saving $50-$70, I am giving up 2 years on the warranty of the enclosure, the service of having the drives tested before shipping, and the ease of just sending it back to OWC should something go wrong with the drives or the enclosure. Are these advantages/conveniences worth the extra cost? Also, I will be using this to store large files that I do not need to access very often. Usually, I will be playing video/audio/photos off the drive. I will be using FireWire 800 because my 15" Macbook Pro doesn't have an express card slot I could put an eSATA card into, so my transfer speed will be relatively limited. Is it necessary to get 7200RPM drives for this application? I can save about $30 on the drives if I go for WD Caviar Greens with a 5900RPM rotational speed over the Hitachi Deskstar 7K3000 with a 7200RPM rotational speed (both drives have 64MB of cache)? Thanks a lot! What would be the optimal setup for these purposes?