I need a reliable external hard drive to back up some stuff. Does anyone have any that are particularly recommended? I don't need more than 500G, and haven't got a fortune to spend. I have been looking at [[http://www.play.com/PC/PCs/4-/11684703/Seagate-Expansion-500GB-2-5-inch-External-Portable-USB-2-0-Hard-Drive/Product.html?add=11684703 this]] Does that seem like a good price?