Garmin Street Pilot 2
I have used a garmin street pilot for the last two years. It has been an excellent "aid" to navigation.
Garmin supplied a 16mg memory stick booster, and World map source CD. This meant, for example I could down load into the GPS memory almost all of Africa.
On another front the World Map source CD is remarkable for the level of detail. For example, when crossing Burma the GPS showed extensive tracks which crossed the Shan state and meant there were options to "avoid" the military!!
Finally, this GPS has a good size screen and is easy to use. However there are a few "user" tips I could mention if anyone is interested. IE getting Lat and Long way point in can be a bit of computer programming class!! But they worked fine crossing the Magadigadi Salt pans in Botswana!!
All in all its a fine GPS and is quite cheep now its a little old...