I have a NH T8 360 we use for planting that has autosteer. I am happy with the accuracy so do not use markers, I think it can be +/- 6" pass to pass, seems better than that, by that I mean it is hard to find enough difference to know where planter turns around.  My question is if I want to upgrade so I could be accurate enough to plant then come back later and sidedress with same tractor and follow same wheel tracks what do I need to upgrade too. I am sure it it just a subscription but what do I need or want. Do not care about year to year just multi pass within same season.

Joe