How many acres of corn are you growingIJ I currently run a 4400 with a 5 row narrow head that I built out of the 444 head that came with my machine, and parts off some other heads. I picked 160+bu corn with it last year, and it was all she wanted, but the machine got through it ok. Next year I hope to have a 6620. The 4400 is a good machine, but when dad bought it we were working about 250 acres total, now I am working more than twice as much, and I have just outgrown it. The dealer tried to sell dad a 6600, when he got the 4400, and he says if he had any idea we would still be running it 22 years later, he would have gone ahead and gotten the bigger machine.