The L3800 is the "basic" no feature series for Kubota compared to the DS "economy" series to Kioti. However the Ds is not available in hydro..
THe DK is the more deluxe series w/ more features and "niceness" so to speak. Also compare the weights of the two and the loader capacity.
Knowing what I know of the two models, I would go w/ the Kioti hands down. You also get Q.T. on the loader which is optional on the Kubota. Just look at the castings and the beefiness of the Kioti vs. the Kub.. Much better tractor and a 4 yr. warranty.
Once people make the jump to Kioti, they are glad they did, it's just a little difficult sometimes. Kubota ia appealing because of the name, but compare the product, not the name.