Hi Max, looked at all the ones you listed there, tried an Ariens up there, single wheeler diff in the Ariens is a problem because the grass is long and uneven and quite a hill. Was looking at the one without an engine and as usual the thing is in Caroline Springs close to 2 hours drive each way. My only concern with that one is being able to make a cone fit, apart from that put a new Chonda on it and it should do the job for him.