Manny, I wouldn't go for the Pioneer AVIC-N1 because I am not too sure how it would work with the center stack in the Xterra. The trim of the dash sticks out above the double-DIN opening for the headunit. With the flip-up screen of the Pioneer, you may not be able to push it up enough to get a good viewing angle. For just a little more money (or perhaps the same price) you can get the Eclipse AVN2454 (which I have) or the Kenwwod that SC has. Both provide a cleaner look in the dash (IMO).

I am also of the opinion that the sound quality of the Pioneer is not as good as the Eclipse or Kenwood. Again, just my opinion and you may disagree with me which is fine since it is YOUR headunit that you will be buying. I got what I wanted, so you get what you want.