Usually there is room for only a single hard disk in a laptop. When you need a lot of storage capacity the only option is to go for a 2.5-inch disk with the highest capacity possible.
Western Digital is not the only one with 1 TB 2.5-inch disks on the market, but the fact that the new Western Digital Scorpio 1 TB is only 9.5 mm thick means it will fit in most laptops. The performance is very good, due to the high data-density it performs as well as 7200 RPM disks. And to be clear, 1 TB 7200 RPM drives don't exist yet.
The new 9.5 mm Scorpio Blue 1TB costs an average of £119, which makes it an ideal hard disk for your laptop. It earns our Hardware.Info Silver Award.
Western Digital Scorpio Blue 1TB 9,5mm