I just purchased an L3700SU and was told the model was intended to complete directly with the JD 3080E, JD's economy tractor. I chose the Kubota over the JD because of the quick detach loader. Read about issues with the jerky 3pt hitch on previous L models, this one doesn't have the quarter valve system so it seems smoother. Also has a small tool box, another thing that was missing on the L2800, 3400 etc. Cruise is an available option but I bought without cruise as I plan to use mostly for loader and pulling stuff. My model is HST but manual is available.
Very happy after just one weekend of use. Will drop a line after using for a few more hours.