40 foot mid-west. Plenty big enough for us as two of our major jobs are on 40 ft tram tracks in nth nsw and ctl qld. Was harvesting 1.75 ton to the acre a few weeks ago and averaging around 60 ton/hr. Sounds good, but not many farms can handle that amount of grain particularly when the road-trains were on 6 hr turnarounds. Have had it up to 85t/hr in good milo in qld but again, not very workable. I think people get a bit carried away with front sizes and combine capacities. My friend runs a 45 foot front on a cat and it only works well in certain areas. Most of the time it is not much in front (if at all) of smaller machines.