We have always ran Gleaners and have an R72. Considering switching to a 9770 but don't know a lot about them. Long story why we are looking to switch colors. The machine we are looking at is a 2009 with 1500 separator hours. At this many hours are there any certain parts that are close to or at the end of their life span and will start needing replaced? I see on tractor house 2008 machines appear to be higher priced than the 2009's. Is this due to the emission's BS on the engines?