I purchased a 7120 and will use it for the first time this fall 2010. .It replaced a JD9660WTS.I combined malt Bly for about 5 hours,it was runing about 85 bu. an acre,andhad no trouble at 4.5 mph.I,m very impressed so far . Still trying to get useto the monitor but I think I will like it with a little more use it. Rod