With gasoline-powered brush cutters, you can work for a long time until you run out of gasoline. You can also work remotely, as they do not depend on sockets/cables and are ideal for rough grass, lawns, and bushes.
Two-stroke gasoline engines require mixing oil with gasoline for proper operation.
Their price is more economical and they usually produce more revolutions compared to four-stroke engines, but they are noisier and have more vibrations and exhaust fumes.