The Fantom G-Force drives provide a lot of storage at a reasonable price. Plus they offer both USB 2.0 and eSATA connectivity for high speed data transfers. The eSATA connection transfers data at a blazing fast 300MB/s so data will move on and off the drive as soon as you click "save".
The GF1000EU has a 1TB SATA drive that spins at 7200RPM with a 16MB buffer for extreme performance. The drive will work on PCs with Windows 2000 and newer and Macs with OS X 10.2 or higher.