Yea, if you can get equal trade for either machine, go with the 8010. It should have substantially more capacity than the 9660. The 8010 is considered a class 8 combine and would be equal to the JD 9860. The 9660 would be a class 6 combine which it would be the same as a 2388. The Case's do a pretty good job of windrowing the straw for baling and don't chop the straw too much. Not real sure how good the JD's are on baling, probably about the same.