I guess the only downfall to the older unit is end of life (Kubota supported) components will come up sooner.
With the newer if emissions are a concern that can be dealt with through the aftermarket.
Hearth.com is a forum with helpful users, much like this forum. They have a pellet stove section that’s fairly active. I peruse the wood burning section often.
I think that may just be the computer generated image, looking at real pictures of 26’s for sale have the latest graphic design.
https://www.tractorhouse.com/listing/for-sale/236404853/2026-kubota-m62-loader-backhoes