Paul, Knowing that you have to look at so many factors when purchasing a new tractor, it's not fair to compare pricing on new versus used. It does sound to me that the NH is the best deal albeit a used machine. Since you are looking at the major brands, I recommend to go with your favorite dealer in your area.
Our family has a JD 5420 MFWD with the bigger FEL, PowerReverser, and isolated workstation. We were looking at a new 5320 and the 5420 came up used at our dealer. 200 hours on it and we saved about 3 to 4 thousand over new price quoted us. The man traded it in to get a cab model.
The PowerReverser takes a little time to get used to. (At 1st, I kept pushing in the clutch pedal instinctively) But now I find it invaluable for FEL work. It is a work horse. No problems.
Good luck with your search...Kyle