A warning about shifting from L to H, etc., "on the fly" - my
B7300 has the same condition. I figured out the shift while moving trick and it worked great most of the time.
Until the day I was on a slope (going down), and tried to shift from L up to H. The *non-synchro* (as pointed out in a previous post) didn't mesh and I found myself *in neutral*, which would have been fine if I'd been prepared and had my foot on the brake. As it was, I had a few moments of terror as my tractor started accelerating down a 10% grade with a heavy load of gravel in the front.
Fortunately, I found the brake pedal pretty quick. But I don't use that trick any more. Much easier and safer to stop - the way I get the synchros to mesh is to put it in neutral and then just kick the HST pedals. It only takes one or two trys to get it in gear.
BTW, I find the HST pedals to be very usable where they are, and hit the diff lock all the time with my left heel. I have trouble adjusting to the different pedals on my JD rider, but I've had the Kubota longer.
And one more "con" (although I love my tractor). I think this applies to the 7500, but that may have a different cooling system. But on the 7300 the coolant drain valve is exposed much like the fuel filter bowl. One day, I'm out mowing and the thing just up and dies. Got the dealer out there "real quick" and figured out that the thing drained and overheated. Fortunately, I didn't keep trying to flog it so there shouldn't have been too much damage.