I had a neighbor who had an Oliver baler. Can't tell you what model. Might have been a 520, might have been a bit older. He loved the thing. Pop had just started selling Oliver when the 720's were introduced and I can remember they did an update of some kind on them almost as soon as they were introduced. Pop bought a New Holland 269 and I hated that darned thing. The pickup head was driven by a belt and just as soon as you got into heavy hay that stupid belt started slipping. They also were top heavy and took a real beating on rough ground. The John Deere and the Oilver balers were lower and wider and they  took a lot less of a beating on rough ground. You guys are still using your Oilver balers and that New Holland was designated to the scrap heap 15 years ago.