One of the latest trends in satellite navigation systems is the use of wide screens. We have already seen one example in the <a href="http://reviews.zdnet.co.uk/hardware/handhelds/0,39023880,39273096,00.htm">Navman iCN 720</a>, and TomTom continues the trend with its three latest devices the GO 510, 710 and 910. We have evaluated the top-of-the range model, the <a href="http://www.tomtom.com/products/product.php?ID=212&Language=1">GO 910</a>.