Both my laptop and PC are filling up, and though I already have an external hard drive I'd like another, though I'm working on a bit of a budget. I need a good, reliable hard drive that's roughly two terabytes in size but is less than, say, 0-ish. I've got a PC and a Mac (laptop is the Mac) to work with, if that makes any sort of difference to the equation. Any brand suggestions or current sales would be much appreciated.