We harvested just over 10,000 acres this past year. We also went to 36' heads from 30'. We would probably average in that 20-24 acres_hr, but we had 2_3 to 3_4 the crop we normally do. In places where we got rain, we would be in that 1400-1900 bu_hr in barley. We liked the 470 combine, but it is not able to do our acres. The difference between the 470 and the 480 is like driving a 1_4 ton truck to 3_4 ton truck. last year we put on 240 hrs_combine on 8000 acres with the 470, and this year it was 250 hrs_combine on just over 10000 acres with the 480R. I would think we gained at least another 30% in capacity. Not only that, but the extra ponies really helped out in our tough conditions last year. I have not had the chance to demo the new CR from New Holland - I hear it is a pretty good machine as well. I have had a 9750 demo, and it was pretty decent, although I did not spend enough time in it to give an opinion.