I don't know much aboput them but the local Massey dealer has several on his lot. I don't think that he has sold one yet. I drove one of them and it drives very well! It is a higher spec tractor than the 500 series is and it appears to be a better built tractor than the 500 and 400 series. It is built in Italy and I think that it is built by Antonia Carrera for Massey. It has a Sisu 3 cylinder engine in all three models. I thnk that the Massey dealer said that it is about 2500-3000 higher than the 500 series in the same horsepower size. They are a good looking tractor to me.