Posted 5/16/2018 07:56 (#6762962 - in reply to #6761537) Subject: RE: John Deere gps
Deere activations never lose value because they are transferable to other displays, at least until the display becomes obsolete, as is the case with the "brown box," which wouldn't work in your tractor anyway.
Buying the activation for your armrest GS3 is going to be your least expensive option. If you choose to upgrade to a standalone display in the future, you can just move the activation to that display at that time.
I would not purchase an 1800. The functionality is nearly identical to your armrest display, but it is non-touchscreen and just an added expense versus using what you already have.