I think the Brumby is not one of the best horse breeds. They are wild, ugly, and they feed on the food meant for cows and other domesticated animals.
Brumbies live in Australia and are seen as pests. Nevertheless they have their uses; scientists use them to the determine what the hard terrain of Australia does to horses hooves and their eating habits.
Brumbies are sold on the European meat market sometimes and greatly improve Australia’s economy. Brumbies are now also used as saddle horses.