hey Yellowsocks,
I think you mean the NA spec 6420 vs the 5820. The Mannheim built 5020 are a mixture of 6020 and the smaller 5010 pieces. It was built to be a 6020 basically,but in a smaller package for livestock farmers who want a framed tractor for loader work,but in a smaller more manoverable package then the 6020 series affords. The cab is more a hybrid ,the tractor is quite a bit shorter,lighter,and with less hydraulic flow,lift, and options especially in the tranny department. But is not meant to compete head on with the 6020. It replaces the badge-engineered JD 3010 series that was sourced from Renault. The 6420 in Europe produces 110 hp on the engine,and this would be the tractor to compare heads up with the NA spec 6420. Like I was trying to do earlier when I stated we do not get the same thing over here. The main [censored] I have with deere is that they have certain options available in Europe but not over here. They only need to make them available if someone wants one,if they don't no big deal. Why the do not amazes me,afterall they all are built in Germany,and the parts are already there. As for the moon roof.......drive a tractor with one for a while and you'll see what I mean........
Sorry,sir but I know diddly about combines.....so I can not answer your questions about them. Deere does have a 80 series of combines over that are bigger than the ones here,but then again all the manufacturers do over there. Funny thing is they also offer smaller combines for the market too,then are available here.
I only know about what I use here or might use in the future. I figure the more I know now the better off I am before I plunk my $$$ down on something that might not be that great, even if it is painted my favorite color. Most of my info on tractors is first hand,but I do have many friends world wide that answer my questions. These friends range from guys like you on the dgs,to farmers,dealers,mechanics,importers,manufaturers' employees to journalists. In today's ag-world you have to be informed,and buy what will get the job done no matter what color it is or who built it!! Unless of course you inherited big $$$ or hit the lottery!! Like the old joke about the farmer that hit the millions.......he said "I'll keep on farming until all the money is gone"........