It will pull itself from job to job as fast as you please and dig for hours without complaint, even reverses out of trouble.
Only downside is size, if you have to travel any distance from home to plot you'll need a trailer.
OH has a GEM and they are even better when in good nick, but much heavier. There was one on e-bay the other day with big diesel engine, double wheels and an extra wide digging width.
Failing that, what do you use the tractor for? Do you not have a pto powered rotovator on it? Plough etc?
