I have been running Gleaners starting with an F in 1965 or 1966, Turned a new F over about 1968. Ran several F models, then for some reason bought a Massey 550 in the early 1970's, still trying to figure that one out. Went back to Gleaners in mid 1970's. I have an R50 now, first rotor combine, and I would not trade for anything else. I take alot of ribbing from the red and green boys, but they have been trading and my R50 still goes to the field. I think Gleaner has done a good job of keeping the farmer what he has asked for in a combine. I do get a little upset at parts cost and delivery, but the combines are good equipment. I think back at the F's and M's and do not remember a bad one. Never had an N or early R model. I like my Gleaner, poke all the fun you want.......