It depends what crop you are in. The CR does ok in small grains such as wheat, barley, or canola but if you get into the high yielding crops such as corn, soybeans, or irrigated wheat or barley the cleaning system can't keep up with the throughput of the rotors. The biggest problem is the paddle fan, it runs short on air. JD and CIH8010 will out perform the CR970. The clean grain elevator runs short of capacity as well in 200+ corn.