I'm not quiet sure what your position is but I would go with a Gleaner, from what I heard the MF 8570 was not the greatest combine at the time, my neighbor used to have one and he hated it, now he drives a gleaner r62 [not to much different from a r52] and loves it in wheat and soybeans but not as much in corn because he is hog farmer and is very picky on feed quality, he finds that it cracks more corn kernels then a case ih rotor or John Deere sts. If your not after crop quality for livestock feed I would go with the Gleaner combine, they sure can take the punishment of harvest after harvest and can be very reliable, too bad a lot of people in Ontario Disrespect the Gleaner Brand, Hines the poor resale value in Ontario. I think the Gleaner is the best bang for your buck and I would pick the R52 over the 8570 mf. What part of Ontario are you from anyway? Just wondering.