Ahhhhh... Australia. Land of Motec, Haltech, Autronic, EMS, Microtech, Wolf....
FWIW, Autronic and Motec are the top two. Motec seems to have taken over the top slot in motor racing, but Autronic seems to be the unit of choice for forest rallying. Based on price, I'd go Autronic, but from reading the manual it is harder to set up (lots of tuning options). Haltech is for street...