I'd look for a combine you can get parts for. I think you were asking this on the MF board to ship overseas. I would consider looking at a New Holland TX if they aren't too expensive. In Canada there is a good supply of New Holland TX combines which are built in Europe and would have more in common with the New Hollands in your home country. The TX seem to be more plentiful in Northern areas of AB and Sk.
Most North American combines are mostly sold only in America or maybe Australia. It is difficult to find parts for older combines. We still run some 70's era IH's and have picked up old cheap combines for parts. If you are looking at getting older combines, I would consider getting two maybe one in not bad shape just for extra parts.