The Challenger_MF combines has as much capacity on sidehills as a Gleaner, if you know how to set them and put the risers on the sieves and grain pan. And I have run Gleaner R series in the past so this is not just a Challenger owner trying to put down Gleaner. The Challenger_MF is as easy to work on as any Gleaner( A,M N7,R62) I have owned in the past. A lOT of things are common to both aready, cab, final drives, transmission,headers, controls, etc. The new Gleaner rotor came from the MF design. As time goes on more things will come from both sides to make both machines BETTER.