Just about to get into auto steer etc and I was wondering if I should go with a JD greenstar system or an independent such as AgLeader/Topcon/Trimble. My situation -New to me 2009 JD 690i combine which is greenstar ready -New to me 2014 Claas axion 840 autosteer ready sprayer tractor - pulling chafer sentry with AgLeader insight controller -2011 Claas axion 850 non auto steer ready - drill tractor I would like -Auto steer and yield mapping on the combine -Auto steer and a better receiver on the sprayer to improve the auto shut off as current getting gps signal from a black box and auto shut off doesn’t seem the reliable -Auto steer on the 850 and utilise the variable rate seeding on the mizuri still Options I have found at the moment are 1 - get a JD 2630 with 6000 receiver to go directly on the combine and get a universal steering wheel conversion for the tractors. Use 6000 receiver to improve his signal to sprayer. Cost approx £15,650 2- get an AgLeader or Topcon to fit onto the combine and tractors. They would have to fit their own yield mapping equipment which I think is the main difference in price. rough estimates from Topcon & AgLeader £20-22k At the moment the JD system seems to be the way to go due to cost and the fact that it will go straight into the combine. Is there much difference between the systems? If I were to change direction in the future is the JD system more sellable? Thoughts much appreciated.