Jo, Not a bad place to be where you are, I mean your conundrum. What brand of combine do you have nowIJ I would think both would work great for you. If I was you I would look them over real good. I think you would see that the CR is a heavy built combine and should last a long time. Someone told me that the CR's drives can take up to 600hp, now I think that is what he said. I am not sure that the STS has that much built into them. I think New Holland built the CR's from the top down, I mean started with the biggest one and then made them smaller. Not sure if John Deere didn't start with the smallest one (9650 sts) and then made them biggerIJ I say that because the 9860 looks the same as a 9650, but with more hp. I think the CR has a lot more cleaning area than the STS. I also think the CR head drive and feeder reverser is much better. The CR has a lot of standard items that you will not find on a STS. I think a CR would be a nice combine for you but then I am not the one writing the check out. I guess you know the one I would buy. There is about 5 CR's around me and all have not had any big problems. Most of the problems have been fixed by new software downloads. The John Deere STS in my area are doing good also, but I have heard of poor looking grain samples from them. Good luck on what ever you buy, Ilnh