I wanted a double-DIN touchscreen, but without navigation as I already have the GPS mount. I ended up going with the Kenwood DDX896, due to the built-in bluetooth, high-speed iPod control and high-res display. So far, I LOVE it! It's awesome!
Here it is installed in the truck:

One of the best features about this head unit tailored to this truck, is the fact that it has the feature to reverse-tilt down on top of the normal tilt-up. Since the factory brackets tilt the whole unit towards the drivers face, the tilt counter-acts it. This makes sunlight glare not even close to being a problem:

I ran the cables for the iPod, the USB plug-in, and the AUX input into the secondary glove box, which should help if someone breaks in, cause it's not too noticeable that it's there:

I installed the PAC SWI-JACK to keep the steering wheel controls, and it was well worth the extra installation and the little hassle of programming it to the car & head unit. It works great and makes it much more intuitive to use versus the stock remote that came with the head unit.
I put a 12" JL Audio W3v3 in the back a couple of months ago wired to the factory stereo, but it sounds even better now plugged into the new head unit with proper preamp outputs:

The next job is to rebuild the sub box to something less noticeable and more professional, cause I don't think the bungee cord is the most attractive solution. I also have 4 pairs of JL Audio component speakers from my previous car, that are a perfect fit for the Pathfinder, so those are going in the truck in the next few weeks hopefully.
Let me know what you think and if you have any questions!