As a 18 year custom harvester, (retired) in addition to a life long combine operator on our farm and for others, I dismiss many stories I hear about certain combines loosing too much out the back, damaged grain, etc. I've ran nearly everything out there. While I do have preferances, I found that all brands out there can do a good, even great job in the field. They can also do a lousy job too. I haven't run the new Deere Roteries. I have run Gleaners, Case IH, New Holland, and all other Deere's from the south, to the north and west. I feel the R 72 Gleaner to be one of the finest and most productive combines, I've operated. When set right, the samples were clean with very little loss out the back. There is nothing wrong with high speed if all other standards are met. If the new Deere, is in the same class, then it must be a good machine. I'll have to see one run under many different conditions to learn more about it. I feel that increased productivity is what agriculture has been all about over the last 100 years. To say that increased ground speeds are not what we want, is the same as saying advances in productivity is finished. Nothing wrong with your neighbor running 8 mph. There is something wrong in saying your neighbor lost lots of beans out the back of his Gleaner and coming to the conclusion all Gleaners are bad.