I guess I am not really qualified to give an opinion having only worked with the l2 model for about 7 seasons before going onto the N's. But considering the period and the competition, ie mid 1970's onwards, the l2 _ l3's would have to rate as one of the best combines ever when capacity for size, reliability, simplicity, ease of maintenance and repairability are all taken into account. And you could even do a bit of fairly easy hyperising and get another 10% or 15% capacity out of them over the standard configuration.