Apple iPod nano - 2GB Black About £150 - UK; $200 - US

Unbelievably small, the 2GB iPod nano can hold up to 500 songs - that’s 25 hours worth of music that you actually want to listen to. Or, take a lifetime’s worth of memories with you in the form of 12,000 photos. The 1.5 inch screen displays album art and personal photos in full colour, even allowing you to enjoy them as a slideshow with a soundtrack.
Scroll effortlessly through playlists and photo albums with Apple’s trademark click wheel, then put your earbuds in and enjoy the clear, quality sound of your tunes.
When combined with the ability to sync with your contacts, calendars and to-do lists, and weighing only 1.5 ounces, the iPod nano is small enough to become a big part of your life.
* Up to 14 hours skip-free playback
* Charge time 3 hours
* Comes with USB cable and dock adaptor to allow compatibility with existing docking products
* Stopwatch and world clock functions
* 4 games: Music Quiz, Solitaire, Brick and Parachute
Apple iPod nano - 4GB Black About £180 - UK; $250 - US

Unbelievably small, the iPod nano can hold up to 1000 songs - that’s 3 days solid worth of music that you actually want to listen to. Or, take a lifetime’s worth of memories with you in the form of 25,000 photos. The 1.5 inch screen displays album art and personal photos in full colour, even allowing you to enjoy them as a slideshow with a soundtrack.
Scroll effortlessly through playlists and photo albums with Apple’s trademark click wheel, then put your earbuds in and enjoy the clear, quality sound of your tunes.
When combined with the ability to sync with your contacts, calendars and to-do lists, and weighing only 1.5 ounces, the iPod nano is small enough to become a big part of your life.
* Up to 14 hours skip-free playback
* Charge time 3 hours
* Comes with USB cable and dock adaptor to allow compatibility with existing docking products
* Stopwatch and world clock functions
Opinion: To be honest, the 2GB nano is fine and has enough memory for nearly everyone. However, the 4GB doesn't cost a whole lot more, and it won't be osolete as quickly, so I'd go for the 4.