Although I am a Tomtom user myself I thought this wasn't bad for the price considering it has the added feature of an mp3 player built in. Also has postcode search.
4 inch wide screen LCD touchscreen
UK and major roads of Europe mapping
2D and 3D map view with night mode
7 digit postcode, points of interest or address search
Includes in-car charger, mains charger, stylus and mounting kit