Anything made in japan will be of a finer refinment over somthing made in korea/china/taiwan. It just a fact of the matter.
However, I only put 28 hrs on my new holland and it is great in every way. Maint I beleive will be the key, A lot of tractor owner neglect them royally.
The engine / tranny is all I care about. The rest I can work on. If the core of it stays reliable, then I can work on the rest as needed.
With dealers, please keep in mind the mechanics get used to working on shibura models, and when LS enters their shop they scratch their head to something new. This could be why they complain about the LS.