My 1872 is the only cub I've owned. No complaints. It is a working machine. Diesels have some advantages in the torque and fuel consumption areas. They also have more complexity in that they are water cooled. I would think that might make it a bigger pain to get to some stuff in the engine bay. The M18 has plenty of power and mine starts like a new one winter or summer. It is a bit of a gas hog but not enough to make or break a decision for me. I would make my decision on whatever is the best condition tractor for the best price I could find. That would be more important to me than gas or diesel.
