I got the M4-071 when my MX had an engine go down and I couldn’t live without a tractor. There is no comparison between the two, obviously different classes of tractor. Having said that more than once I’be wondered if I should have sprung the extra $100 a month payment for the M5. In the future I see myself round baling and who doesn’t like nearly double the fell capacity. The M4 maxes out my trailer which was kind of where I made my decision and I don’t have buyers remorse but I do have M5 envy now