My company has two of the 4CX14's and they are BEASTS in lifting and pushing capacities, but I haven't done any loading of dump trucks with them, only equipment on and off of trailers. Ours are only a year old but no problems yet and they have been run by some real yahoos. The different steer modes are great for getting around and maneuvering tight areas, I pushed snow banks back at our main office this winter and the 4 wheel steer made maneuvering around cars, trucks, and other things in the lot a breeze.