I am a big fan of the iPhone. If you are looking for just a quick and simple lookup, it comes preloaded with google maps, and you can get google earth for free. These are not dedicated GPS applications though, for that you have a lot of choice.
Nokia Maps (OVI maps) has free voice guidance for most of the Nokia smart phones and I think it is great. Nokia OVI maps has pretty popular fan base in Europe, so probably pretty good with POI's and stuff.
Hi I live in the UK and have Pda Phone and I recently bought Mio's Iphone Gps Car kit it worked really well so far for me and the signal is really good. Any one gone outside the Uk with it?
Is the signal still good?