I put the 4020 to the test today pulling up about 40 autumn olive shrubs along our driveway, it took all of about a hour an a half to up root them and pile them up.If your not familiar with autumn olive it grows to about 10-12 feet tail with long sharp thorns and the wood is as hard as steel. I know this because 5 years ago it took me 4 days to cut them down and haul them a arm full at a time to a brush pile 100 yds away, I spent a week digging thorns out of myself. Today I never got off the tractor,its things like this that justify spending our money on equipment that makes our life sooo much easier.