traded my 2014 for a 2018 1025R. got $11,500 for my 2014 (600hrs) had to pay $5600 difference. 54" deck and loader. not many differences. 1. chain on fuel cap, 2. different mechanism to open hood (hood has 2 struts) 3. no markings on light switch.
Thing I like, seat and seat springs. I cut a 4 acre cemetery with most graves from the 1800's so the boxes are all gone and the ground is very uneven. I had to install seat springs on the 2014. I removed them before trade and cut cemetery and got reminded on why I installed them. Cut the cemetery with the 2018 with original springs and couldn't believe the difference. I've heard the springs are the same part number but I guarantee that the springs are not the same.
Thing I dislike, the rollbar is slanted over the operator station. It's much harder to take down to put in my shed.
so all in all not a lot of difference in 4 years