I am on the hunt for an external hard drive for my girlfriend's iMac, and come seeking recommendations from you fine people. Unfortunately I am simply not really in the know in this area and can't tell a reliable brand from a dodgy brand, and all that internet searching seems to bring up is bad reviews for virtually all the brands (whether or not this is an industry trend I don't know).
It needs to be at least 500GB and AC powered would be fine considering it will be sitting on a desk. Reliability is the main requirement, so whilst I have noted a few on here recently (the 1TB Iomega from Comet caught my eye because I have a 500GB Iomega that has been going forever) I am more than willing to spend a bit more to guarantee reliability.
So you recommendations please, people. I offer rep for helpful answers, for it is all I have to give.