The 9620RX's have gotten very popular around here. I think only because the JD dealer is closest. Head 30 miles south and your in CHN country. The quad tracks pull like hell for the heavy tillage done around here, but at the price of undercarriage. They're north of $30k per corner to put tracks and suspension on, and it only lasts 2-2500 hrs. The new Fendt 1000 row crop machines are creeping in. Central tire pressure management combined with giant single radial tires makes them wicked pullers, but easy to road around with the push of a button going from 3 psi to 20.