Looking for a header for our 9870. I've been running our ancient 936D that we've had for several combines since the early 2000's and it's absolutely shot. Looking at 635D's. Would go to 40 but due to our spread out situation and narrow roads I'd be taking it off all the time to move. Neighbor says I should go with MacDon Flex or a Deere flex but the deere's are junk. Seems to be a lot of them around though. Cutting wheat only with it. Thoughts?