If you need more capacity HDD for your data, I think you must see Yano MetalWear EX 1.5TB capacity. Its more larger capacity than LG XD4 and Iomega Ego Helium. Come with aluminum case with 7200rpm SATA.
With code name MTH1500EX, Yano HDD give another features like firewire 400 and 800, eSATA, and USB 2.0 port. The MetalWear also compatible with PC , Linux and Mac users. It will be available on December around 400 Euro.