I personally think it is much better than deal for £10 extra comparing to 4Gb Nano.
use the 25% voucher to get this price
Apple 8Gb Ipod Nano Black. Weighing in at just 42 grams and only 6.9mm. Thick the iPod Nano fits your lifestyle. The chic matt anodised aluminium case resists stains and scratches all the while protecting the 3.8cms. Colour screen. iPod Nano lasts up to 14 hours on a single charge, and your music will never skip. Please Note: This 8gb model stores upto 2000 tracks.