I think either, the 475R or the 9650STS can be good long term machines since you are planning to do your own regular and winter maintenance. The lexion has more grease fittings with grease banks but I think this is an advantage over the long run. Grease banks on the left and right side feed the main bearings, for APS drum, main cylinder, VS pulleys, chevron impeller and front of rotors. All crop flow through a lexion is across heavier concaves and grates, which are also replaceable. STS seems to wear out the top of the STS housing around 1500 seperator hours. STS cleaning shoe, sieves and louver wires will wear out alot sooner than on the lexion, which are very durable. Typically the STS feederhouse drive _ reverse will fail, repeated if you ever run a 1230 cornhead or fast with an 830 in high yields. STS on tires would be better if you are going to do a lot of road travel, but lexion 475 tracks are nicer in the field and really valuable if you have wet conditions or a bad, muddy fall. Their limitation is road speed around 16 mph on the 475R. Auto steering is now a hot topic at the JD Days shows and ads, and becoming considered for STS combines, but the experienced and proven technology of lexion auto-pilot is currently the best system available for corn harvesting. laser pilot can be retrofitted and is suitable for small grains. Once you make the one or two day transition, you will like the monitoring, good wiring and complete phrase information available on the CEBIS better than the JD cornpost modules, which are limited by codes and complex calibration steps with awkward symbols. The cat engine 3126B seems more reliable for the long run, I seldom hear of those causing any high hour problems. It is my opinion that the lexion is the better long run machine and has better current field performance. Whereas I think JD still has the better parts system because of their long term and more frequent experience on a larger population of combines. Parts sales and profits may be a more important revenue stream for them. At the same time, I see the Claas Omaha and local Columbus, warehouse ramping up better parts stocking, storage and distribution systems and trucks. What size and year of headers are you considering with these two combine optionsIJ