I have one, the issues are documented. The positive side is it is a lot of tractor for the money.
There are rumors circulating AGCO is going to stop supporting Allis Chalmers tractors from a parts standpoint. This is rumor only. The fast moving parts are avail. aftermarket and you can always work salvage yards.
Depends on how many acres you farm. We use ours as a yard tractor. Works fine.