...I like my simple mechanical Kubota. My yard can certainly support a larger mowing tractor but I do not want emission systems and electronics in my personal life. So I stay at my 26 h.p. limit for that and just make more passes.
Paystar, I had the same tractor as you (mine was a 2013
B2920) from new until last year. It was 29HP, zero emissions controls, fully mechanical. The only electrics on it, as you know, are the glow plugs, instruments, and fuel shut off solenoid. It was a very good tractor and performed more work for its size than anyone could imagine.
If you ever want a newer, somewhat larger tractor, I'd recommend an
L2501. It is heavier, wider, and can lift more on both ends. However, being rated at 25HP it is a non-emissions tractor and again only uses electrics for the lights, instruments, glow plugs, and fuel shut-off. However, I think it is a nice improvement over the
B2920 I had. It has mechanical direct fuel injection and starts much better than the
B2920. It has a 10 gallon fuel tank instead of 6. The engine feels much stronger than its rating - I think your
B2620 has a 1.1L engine; my
B2920 had a 1.3L engine...the
L2501 has a 1.7L engine, so much larger. It runs at a lower RPM with good torque and it is quieter.
But that is neither here nor there in the argument of Kubota vs Deere.