We are debating about trading our CR on a John Deere but the sieves on the 9770 look awfull small. Does anyone have both units CR and STS and knows how they compare.Especially in terms of losses and reliability. Also considering lexion590 and 9895. Is there beside hp any difference between 9870/9860 and 9770? I had a demo 9670 in canola once and I was disapointed. We combine mainly canola barley wheat and lentils. Any thoughts and suggestions appreciated.