Is your PC’s hard disk getting cramped? Invest in an external hard disk and never again worry about running out of room.

Strong on data security measures, this drive is a stand-out.

Light on features, but it’s tiny and ferociously quick.

Rugged and durable, but overall it’s a bit pricey

Clean lines undermined by poor performance and a high price.

Stylish, quick and cheap but not Particularly small.

Great design, but average performance lets it down.

Tough, quick and a good choice if you need a little extra protection.

Fine performance and features make this a worthy winner.

Quick, packed with interfaces, but just a little too expensive.

Thin, but short on features and not particularly cheap either.

It may lack eSATA, but this is a fast and cheap terabyte drive.

Quick, cheap and light: the best 3.5in drive in the group.

Stylish and versatile, its only drawback is the mammoth price

Relatively quick and cheap, but not quite up there with the best

Western Digital MyBook Home Edition

Light, packed with features and with superb battery life: the ideal business notebook.

Superb battery life and features, but poor build quality and an uncomfortable keyboard scupper the Lifebook

Superb speakers, a whopping 640GB of storage and decent core components make this a solid choice

Fantastic 3D performance makes the M1730 ideal for gamers – but only those with capacious wallets.