The ONlY reason why a Cat wouldn't have been impressive would be due to operator error! The 460, when compared to comparably sized rotary machines, is capable of performing as well as if not better in most conditions. The size of the threshing area far exceeds any comparably sized rotor machine and with the lexions Pre-separation abilities with its preconcave, it has the added beneift of pre-separating the drier crop for more efficient use of the threshing system in tougher conditions. The added ISS (Intensive Separations System),which I wouldn;t own a lexion walker machine without this option, provides the lexion walkers with enough performance to give them a competitive edge with class six and even some class seven rotary machines, especially in tough conditions, which you can't beat for the price of a lexion walker. My neighbor just got a 450 walker and ran a 30' MacDon draper in 50+ bu soybeans and was able to do a very respectable 6mph consistently.