4. Rio Karma: 20 GB In Your Pocket

Like all Rio products, the Karma looks different. This fat device with a rubber handle appears fun and friendly. Rio has taken a risk, because most manufacturers go for understated elegance for this type of MP3 player.

With dimensions of 80x80x30mm, it is really small for 20 GB. The weight is even more impressive, just 156 grams. The main eye-catching feature is the huge LCD screen of an outstanding two inches. The built-in lithium battery is recharged via a mains adapter, not the USB. It can run for a long time on continuous playback - we measured nearly 13 hours.