I had my JD 955 for almost one year. It made one trip to the dealer. The dealer wasn't really nice to deal with, charged me a lot of money (as many will) to transport it and then charged more to bring it back when their original price was supposed to include return transportation. There were other problems and the repair cost far more than I would expect, mostly because of the cost of labour.
Even after that experience, I still decided to talk to their sales dept. after deciding to replace the 955 with something new. They were worse than the service dept. They had no real interest in me becoming a customer, so I didn't!
Contrast that to my Kioti dealer (no, I don't think brand means anything here, this story could be reversed elsewhere). They bent over backwards during the sales process and were a pleasure to deal with. They threw in a bunch of stuff with the sale of my tractor, including loading the tires, front and back work lights, free return transportation (120KM/72Miles) for any warranty work that can't be done on site, block heater, the 50 hrs service and probably some other stuff I can't remember. Their package price (CK 30hst + Woods bh-70x - my trade) was better that I expected, and much better than any of the other brands (because of the trade value my dealer gave). I have had many issues with my CK 30 (
http://www.tractorbynet.com/forums/kioti-owning-operating/218090-my-new-ck-30-a.html) but each one has been address professionally and by a pleasant dealer. The end result is I still enjoy my tractor and still think my Kioti is the cats @$$.
All of this long winded message to say I firmly believe the dealer is important and you need to be within a reasonable distance to them. My dealer works hard and is willing to travel to my place, so 120KM is reasonable in my case. Besides, any closer and I'd probably be broke!