Hi all, I'm looking to get a new Garmin GPS for off-road travelling in Africa. Very important would be the capability to load my own tracks, created in Google Earth, preferably in easy to select layers. The reason I'm only looking at Garmin is because I'll be using the Tracks4Africa map as the base map. (only compatible with Garmin) Any feedback would be much appreciated. These models are within my budget range: Zumo XT Montana 700 GPSmap 276Cx Many thanks, Joe