Tomtom Maps Spain 2010 TomTom Map Of Spain/Portugal?

TomTom map of Spain/Portugal? - tomtom maps spain 2010

I have a TomTom Go 510 Satnav comes with maps of main roads of Western Europe. For the look of things, I can around the main streets of Spain to work, but not directly, such as postal codes in Spain. Has anyone used the Spain / Portugal map? Is it a good value for £ 29.99? Or is it better with what I have, and a road atlas of Spain? The problem of confusion is that I will do most of the driving and my partner can not read maps while the car moves, it makes you feel sick.