I like playing the "Although I'm buying a tractor, you're really buying a long-term customer" angle. It's important that they understand that the tractor sale is not the last time they'll see me. If I get a good deal on a unit, I like to go back and get parts, supplies from the same dealer as well.
Cash deals are always the best way to walk into a purchase as well. That JD financing costs the dealers money.. so paying cash is ultimately cheaper for them anyhow.. in my case about 10% I figure.
The reality is that local bank rates are often better than what JD can offer.
Another tactic I use is for them to understand that I really liked the other brand tractors as well. I did my homework and made sure I understood the specs of the competitor machines. When they know that you're likely sway to another color, they're more likely to knock the price down a little further because a sale for them would mean a lost sale for their competitor. This was a key tactic when I bought my Dodge Ram

.
Oh.. and I find that when the you're finally settling down to the final price (the nitty gritty

) say you'll take it if he throws some other small items in. "OK, let's do 22.5K if you throw in my first 50 hr service parts". Then I do what Borat does.. I spit in the palm of my hand and put it out for him to shake!!

Just kidding
Congrats on the new tractor. I was a complete newbie too when I bought my original 2305. But it's become a real love affair for me, just like most of the others here on the forum.
Gord