The big Challenger combine class 7, the 670, won't be available until next year I think. I agree that it is going to be one tough combine to beat. In small grains, it's just tough to beat a Gleaner. Based on running the both machines in the crops you mentioned, I would put my bets on the Gleaner to be the best performer (capacity, loss, and sample quality) in all the small grains as the lexion has so many moving parts to process the crop that that 400 hp is used up pretty quick in parasitic losses with all of those components. The Gleaner is extremely efficient. When it comes to corn, the lexion probably has a slight advantage because the limiting factor on the Gleaner (at least with a 12 row head) is the clean grain elevator. The lexion has a slightly higher capacity clean grain elevator and will probably be higher capacity than the Gleaner with 12 row heads. 8 row could be different story. Still tough to beat the Gleaner's attributes of simplicity, reliability, durability, and ease of crop changeover, not to mention ease of hauling it compared to the lexion which is 10,000 lbs heavier. I think that's why the Gleaner will remain so popular with custom harvesters - tremendous capacity from a small package.