I use both NH & Kubota, although both are smaller than you are looking at. (TC24D w/12LA and
B2910 w/LA402)
IF you are planning on doing a lot of loader work, then I would tip the hat to the TC33DA because I believe the FELs on the NH units, combined with the sloped and curved hoods, are vastly superior to the Kubotas in terms of visibility during actual working conditions when using a FEL. I didn't realize the difference until I spent a few days working to clear out a field behind my warehouse, I was using the Kubota and was shocked by how bad the visibility is forward with the long flat rectangular hood combined with the squared off loader arms. You get used to something and don't realize how good or bad it is, until you have a reference point that is SO MUCH better that it just blows you away. That is what happened to me. When you hop on a machine and use the loader for 15 minutes, you don't really notice it, but when you sit on it long enough to get a sore backside then you realize the shortcomings compared to the other design.
John Deere is rolling out their new curved arm loader, but if you compare the arms of the JD to the NH you can see that they are not raked down nearly as steeply, so that they still don't provide the view the NH gives. When I drop my NH bucket to the ground, I can see most of the bucket, that is a very large advantage in real world working conditions.
But beyond that, I cannot give you any other specific information about which is better. Both are excellent brands, if the dealers are excellent then you have a tough choice.