Which belts are you having trouble with on the Cr? I own 2 cr970s and also worked at a JD dealer for 2 winters and from what i saw there the Jd's needed more money in and had more large catastrophic failures then Nh does (engines, gearcases) but im sure theres some survivor bias with all the worst jobs coming into the dealer and the combines that didnt need much just getting done on the farm. I dont see you gaining any uptime with Jd unless youd be getting a better dealer or something like that. I still do combine repairs for others in the winter and i feel like the case needs the least man hours of repairs of any, but the repairs they do need generally cost more then NH