Updated September 16, 2026. Disclosure: As an Amazon Associate, we earn from qualifying purchases. Quick answer: The RYOBI RY402110 is the heavy-duty choice in this group. It combines a 15- to 17-inch adjustable swath, brushless motor, carbon-fiber shaft, 6Ah battery, and a three-in-one head that accepts bump-feed line, fixed line, or blades. That capability comes… Continue reading