The way I feel about JD and Kubota, they really don't even belong in the same conversation.
Kubota is the real deal and build 100% of their tractor and they have a very strong/long history of building and supporting outstanding tractors. They put their engines in a bazillion other things, mowers, other tractors, various equipment of all sorts. When I went tractor shopping my first choice was a Kubota. They just didn't have any, at that time, with loaders near me. I see Kubota and Yanmar in the same light though Kubota has a much better dealer network. Though I do believe whole heartedly that Yanmar builds a better tractor, it isn't by much. Just my opinion.
JD on the other hand, who I would say is historically one of the greatest tractor manufacturers of all time, probably the best in the US, has been resting on their laurels with regard to small tractor production. They have been outsourcing their parts for years now. I still think they build a great tractor and I've even shopped JD even recently. I was in the JD salesman's office about to sign papers on a used JD when a CL seller called me about an ad I had put out about my JD Gator. We ended up trading even for my little Case IH DX24e. I just don't think that their dealer network, their availability of parts and all of those ancillary things are enough to get this buyer to pay the premium price for their product.
I've read through enough of this thread to see that a lot of JD guys act like those of us who don't buy JD can't afford it. I think that is a foolish comment/thought. Many guys like us who choose to put our money into a more prudent investment could walk in and pay cash for a JD, if we choose to.
This is coming from a home owner who though I live on a farm and maintain a farm, don't farm. I could easily not even have a tractor and just burrow my MILs when I needed one. For those of you who make a living or even a partial living with a tractor, that scenario is completely different. In that case you need the good dealer support, the parts availability etc. etc. and if I were in that case I would buy a Case IH : ) or a JD or a Massey or... whatever dealer supported me best.
I think green tractors are great, I just don't think they are worth their price. They have outsmarted a lot of the other tractor makers with their marketing.
The above comment is only in regard to Compact tractors and below. The Large JD tractors, I have no experience with but I do know the guys who farm my MILs acreage have nice big shiny new JD tractors and they seem to be broken down every harvest in the past two year, good thing they have good dealer support : )