Well sir, the New WTS has many parts inside that match the 9600 your thinking of buying. The CTS has not been a production machine for quite a few years. The seperator is narrower on the CTS as well, meaning the cleaning area of the CTS is that of a 9500. About eleven inches difference in width. I would go with a 9600. I would also look for a corn combine in a 9600 since they were produced with more horsepower from the factory over the grain combine. Sounds like you might need a two speed cylinder drive as well, Id check into that. My preference of 9600s is to look for 1996 models and up. They had better options in those later years. 9610s seem to be more pricey and dont boast any more capacity or frills for the money.