There isn't a cornhead on the market that can do what a lexion head can and do it with less power like the lexion head. Knife rollers are standard, I don't eventhink lexion has fluted rollers. lexion knife rolls are like the old CaseIH 1063 head, where the knives meet to snap and cut the stalk preventing any build-up on the snouts and causing less material to enter the combine. I watched the lexion head follow a gerinhoff chopper head at a farm progress show one time and, to me, it did a good enough job not to warrant the extra cost for the geringhoff chopper head. The lexion heads are built stout with skid plates up front to protect the front of the rollers and the cross hex-shaft underneath is segmented and chain coupled to every gear back making change out easy if needed and they also flex. No matter what combine I run in the future (probably never trade for anything but another lexion),I will always have a lexion cornhead.