I got to see some Agco Orange rolls that had seperated, "teeth" looked good, but they were wore through and sliding off the metal further down.
I would vote try Gibson or PFP.
IIRC someone was running PFP on one roll, and Gibson on the other and liked the combo.
Our farm purchases a combine soley on its ability to do an excellent job in all of our crops, while being fuel efficient, reliable, ruggedly built, and easy to repair. That is why we choose a Gleaner.