I've had quite a few different tractors on the farm and as a basic workhorse, my Jinma 354 is OK (for a cheapie). The biggest problem with our unit was the hydraulics. For They didn't work properly from day one. The controller for the front end loader was replaced a couple of weeks after delivery because of a manufacturing fault, fluid leaks continued unabatedfor three years.
We used at least $100 of hydraulic fluid every year because of leaks in the system. Mechanics who come to fix it say 'Oh it's Chinese. That's what they do.'
Then at last we mnaged to gewt it fixed. Apart from the cost of the leaking hydraulics, the only other big gripe was the rear hydraulic lift but that has now also been fixed. The front end loader works great I must admit that a few choice words have passed my lips about my Jinma - but then I think .... I should have paid $50,000 for a tractor instead of $20,000.
It does a great job pulling our mobile chicken sheds around the paddocks - and as that's its primary purpose, it scrapes by as 'not the worst tractor in the world.'