I have tried many different tractors on our augers 13x94 Westfield's and the best one is the old 4430 you can reach through the door and start it and start the pto then open the little window in the front right corner of the cab and can control the throttle. Never get into the cab unless we move the auger. cant do that with my newer tractors
Edit to say the engagement smoothness cant be beat on the 4430