I work for the United Nations, and travel throughout Africa, Iraq, and Afghanistan. I use a Garmin 60CSX and have never had a problem with it. As far as maps, mine are from various sources including the free online maps that you can get online. I know that the military has maps that they can load into private handhelds as I have a few of those myself. I have never had a problem with my Garmin, and know quite a few of the private contractor use them also. Hope this information is helpful.