fight no fight here in order to give an unbiased opinion on all combines you would first have to operate most of them. I have run deere 4400, 6620, 7720, 7700, 9500, 9510, 9600, 9610, and 9750. Gleaner A2, K2, M2, R52, and R62. Only 2 new holland's 1400 and TR70. And CIH 1660, 1666, 2188, and 2388. sorry never ran a cat but seen them run. My opinion is never bashing, biased or BS. Just what I have learned over the years. As my lat grandfather told me, "yes I once owned a gleaner then I bought a combine. You may think I dont know alot but I've been inside and out of these machines and none are fun to work on. But until I can be proved wrong I'll be red though and though, because We've ran the same 1660 since 1991 and, knock on wood have had no major downtime and never been down for more than a few hours or till morning for parts or a flat tire. You know bigger grain tank and more horsepower don't do you any good sittting in the shop. Just my 25 cents worth.