We tested an Agco prototype stripper back in 1994 as the project engineer was a friend of mine. It varied from the Shelbourne in that it's rotor is one piece (no center bearing),you changed rotor speed with a gear shift rather than swapping gears and was of course painted red and black. We find the maintenance of these heads to be low however, we keep them out of the dirt and have no rocks to speak of in our fields. You can really cover the ground even with a small combine equipped with a stripper header although you do have tall straw to contend with after harvest. We use a loftness shredder to chop up the standing stubble.