Hey guys, For those of you who are Aperture 3 (or 2) referenced library users, do you suggest getting an external hdd (portable, trying to pack light for a trip) that is 750gb 5400rpm 8mb cache or 500gb 7200rpm 16mb cache to host master files for aperture 3? Space-wise, I could go either 500gb or 750gb. Obviously, the more the merrier, but looking for speed and performance. The two drives I'm looking at are from OWC: 5400rpm: http://eshop.macsales.com/item/Other World Computing/MEQM7500GB16/ 7200rpm: http://eshop.macsales.com/item/Other World Computing/MEQM5750GB8/ The esata benchmarks are almost the same (~10mb difference read/write) while fw800, there is a significant difference in write speed. What do you think? Thanks!