Don't underestimate that little Farmall Super A. It could drag most of those imported 4wd hobby tractors all over the barnyard.
I would like to see some of the imports go thru a Nebraska HP test like those little Farmalls did. I am sure they all would have to adust their advertised HP ratings a bit. Older Farm tractors only advertised belt, PTO and drawbar HP. I notice the imports advertise engine HP and some PTO. But none reference an independent test. Nebraska had a law in order to sell a tractor in the state Nebraska it had to certified for HP by the University of Nebraska.
Farmalls were simple to work on, parts availibity is excellent and thay don't cost alot to own. It would work excellent on a truck patch. That was a favorite tractor for the commercial tomato farmers in our area. Probaly $1500 to $2500 will get you an excellent one. The "Supers" were a bit nicer than the standard "A" Farmall.
For between $10,000 and $15,000 you can get a really nice John Deere 3020 or 4020 that would have adjustable wheels (rack and pinion axles), Independent PTO (540 or 1000), 3 point with draft control, excellent clearence for crops and it is probaly the best row crop tractor ever built.
They have held their value well. They sell for what they did new 40 years ago. I would guess they will still sell for that price 40 years from today.
Good Luck and let us know what you choose.