We had Axial-Flow combines up until our 2166, and had little problems with them. Prior to that, we had 2 915's. We installed the stone-trap option on our 1660 and found it helped with feeding (somewhat) in green, stemmy conditions. Our current Deere 9650 (walker) is only the second Deere combine we've owned, and we only migrated from CaseIH on account of our local dealership; - not the combine itself. My neighbors 2388 has no problem keeping up to a Deere 9660STS.