Here's a small update about my use of a GPS last November.
Before my trip I bought a Garmin Quest and all of the Tracks4Africa Pro maps. The main reasons for buying a Garmin Quest were the following:
- use in my car for routing
- use on my motorcycle for driving preset routes
- audible route instructions
- ability to track travelled routes
- compatibility with tracks4africa maps
I'm very happy with the auto routing performance of this GPS. Although the screen is smallish it works really well.
Funny enough reception is better in Africa then in Europe. In Holland I get around 7 meter accuracy and in Kruger it was around 3 meters. It can take some minutes to pick up satellite reception which isn't that important in the bush, but annoying when used for auto routing.
In Kruger I used the GPS extensively in the Makuleke concession to track all the dirt roads we drove on. During the four weeks I used 40% of the track recording capacity (10.000 track points). The recorded tracks can be used in Google Earth to superimpose the GPS data on satellite maps (see this
link). I haven't seriously used it off-road yet, I'll test that next November in Botswana.
I was amazed by the tracks4africa maps. They are very accurate, include all the roads in S.A. including some of the cities and best of all they include all the roads and major landmarks of the Kruger National Park
I bought the pro maps because they include more detail, but the free basic maps will probably also work fine.
I can recommend this GPS to anybody looking for a car based GPS system. I say car based because it's not suited for hiking because it runs of an internal battery which can only be charged by a 220V socket or a car lighter. The Quest will run for about 16 hours on the internal battery so it's allright for one day hikes but not hikes longer then that.