The difference between the zetons and 04's is that zetons have hydro pumps and wheel motors Which is a LOT better than the 04's hydro transmissions. also the o4's have smaller tires and they have a tendency to throw hydro belts. We quit making 04's end of last year. a Zeton will run circles around it and you wont have near the problems with a zeton.
We do have a new mower coming out we just shipped out all the demos to the dealers, It is a country clipper Charger it is a zeton drivetrain and front pivot axle on a jazee body.