I have a Tractor Supply/King Cutter Middle Buster. I'm in upstate North Eastern N.Y. I use mine for drainage ditches. I've pulled it through rock, clay and tree roots that lift the front of the tractor off the ground ( with
FEL..) when caught on a root.. Have not had any problem. When I bought the buster from TSC for $13 extra they had a subsoiler that you unbolted the shovel head & bolted on the sub soiler cutting blade for really tough earth. I've not needed that/no bends or twists in my TSC unit to date... [img]/forums/images/graemlins/wink.gif[/img]