Well, unless the 1026R somehow isn't meeting your needs anymore (sounds like weather is the real issue) I would sit tight with that model. It's not that far off from the Kubota 2320-2920 models, and you'd lose money trading out at this point. The 1026R still has some better features, like position control on the 3-pt, a better seat, and better lighting.
If you do move into a Kubota B-series, look at the
B2620,
B2920, or step up to the bigger
B3200. Those would be the most compelling models to change over to from the 1026R. I happened to like the
B2920 since it maximized the power I could get in that chassis size, which was perfect for my needs (
B3200 too big,
B2320 too small).
I did shop the Deere 1026, 2320, and 2520, but just felt the Kubota was a better combination of features, price, and construction quality. But they are all good tractors that would have met my needs more or less.