we ran with a 9895 for the last two years... a hot 2388 was its equal, losses were close to the same with same size header, rotor deslug works great on them, as for the 8010, massey was doing 1650bu/hr as the 8010 was doing 2000bu/hr
i would say the 7120 and 9895 are equilant with the edge to case, masseys rotors take a ton of power, but overall a sweet machine, few guys our area have over 700hrs with no major issues, cats motor has some real strong lugging in tough conditions