wayfinder worked great for me while driving all around Provence in France for 8 days over christmas, and works pretty well for me here at home in London too, although It does tend to try and direct me on the most congested route into central London when I drive in.

I certainly don't regret buying it, also, wayfinder was my excuse to my wife to let me buy the N800 tablet in the first place and I use it every day for bookreading/browsing/scheduling too