I have experience with newer Arburgs. The Selogica controller is good and allows a lot of control. The older version before that was a little confusing. I would say on the older machines that are in 1980's the reason they are cheap is that they are probably are a maintenance hassle, not very energy efficient, and lack the precision or control that the newer ones do. However if tolerances aren't tight, your schedule allows for maintenance downtime, and you aren't using it much might be a an option.