I just finished a tractor purchase at a John Deere dealer in SE Minnesota and I must say I was treated with courtesy and professionalism. I had been researching the Deere 4066r for some time and made a decision I was going to get compact tractor with a nice cab. I got prices from three different dealers and even the two that were substantially higher in price still treated me well. The sales "consultant" new his product and in one area where he wasn't exactly sure he didn't try to pretend like he had the answer. He said he would get the correct information and get back to me.. I had a phone call within 20 minutes.
In the end we put together a deal on 4066r with H180 loader with several upgrades. I took about 3 weeks and a dozen phone calls to decide exactly how I wanted the tractor and loader equipped and was never made to feel I was bothering the salesman. My experience was pleasurable, so much in fact, that I contacted one of the owners (they have 8 dealerships in SE Minnesota) that I have known for 25 years and told him.
So, it is possible in this day and age to have a good experience with a tractor purchase from John Deere. I too, over the past 30 plus years of buying John Deere products from dealers, have gotten an occasional "stinker" that can sour the feeling of trying to own John Deere products. But generally speaking, I have been pleased.