Just bought 4 of these for myself, £64.29 for 2tb in a drive that i've seen good reviews for, doesn't suffer from on-off count bug of the WD's. This is internal sata-II btw, not external.
Better for storage than as a system drive due to low RPM, but overall a great find.
SAMSUNG 2TB SATAII INTERNAL HDD HD204UI Samsung HDD
Bootable CD ISO Firmware Patch: http://captaingeek.net/how-to/samsung-f4-ecogreen-f4eg-firmware-bug-patch/