The 670's are massey combines. The lexion was the original Cat combine. I was at a wheat demo a couple years ago and watched a class six lexion 460R just spank a class 7 challenger 670. The wheat was about 100 bpa and the straw was damp and the lexion was running the header on the ground like it would in soybeans so they could bale behind it and did a beautiful job. Its windrows out the back were all very consistent (no piles) across the field. The 670 was surging bad due to the tough conditions and leaving piles in the field that had to be conditioned before baling. Our STS will do similar to the 670 if conditions get that tough. I was amazed with the lexion. We didn't hear it romp or groan once and its grain quality in the tank and on the ground was the best i've ever seen in conditions like that.