I'm approaching my 10th year with a 4rn geringoff on my 5820 harvester. They're (obviously) a little more power-consuming than a regular snapper head, maintenance costs are higher due to the roller choppers, and they're definitely NOT a high speed header. 4.5 mph is about top speed for these units, even if they are kept in "tip-top" condition. I would buy another one! What else would you like to knowIJ