The dealer sells both Kubota and John Deere, or the BX is used?
It would have been awesome to operate them side by side. Even if one was used (presumption).
I'm surprised the difference is only $1,850. For that small of a difference, financed, for 60 months at 0% is only $31 a month. Of course, that's still a fair chunk of money and would buy the thumb, canopy, and box blade. $2K is a heck of a lot easier to swallow than $4K or $5K, just for the machine.
Please, report back after getting to run them, side by side. Of course, we will want to know the year, hours, and any other details that are pertinent.
****, I'm jealous you get to try them both at the same place, the same day!!!!! That's excellent. Try everything!
Don't forget, you don't have to buy the extras from John Deere. Land Pride makes most of their stuff in green. Woods is also another popular manufacturer. When it comes to stuff like the box blade, there are many good manufacturers. There are other thumb options, too, but I don't have a thumb, yet, so I can't comment on those. Same with the canopy.