Hi. I'm want to buy and external hard-disc for my iMac. In this hard-disc, i'm only gonna put my music files. I'm hesitating between 2 kinds: 1) Lacie 250 GB USB 2.0 External Hard Drive (http://www.amazon.com/LaCie-Externa...r_2/002-6940899-5710411?ie=UTF8&s=electronics) 2) LaCie 250GB d2 External Hard Drive Extreme USB 2.0 and FireWire 400/800 Interfaces (http://www.amazon.com/LaCie-Externa...s_3/002-6940899-5710411?ie=UTF8&s=electronics) Is the cheaper one (number 1) is enough for what I need (only for storing music files), or should I go for number 2? Thanks for your Advice.