I have been using a Samsung tablet with Back Country Navigator loaded on it for a few trips now. I really like the ability to build a route on my laptop in Google Earth and then export it to a kml file for my tablet. The screen is large enough I can easily see it while driving or my wife can look over and see it easy. Plus it has all the major map sources on it so I can switch map sources based on where I am at without losing my route.

I still carry paper maps when I can but the tablet has made maps and routes so much easier. I do not have to worry about missing a turn and then what is going to happen. Sometimes I can appreciate the adventure but sometimes I just want to enjoy the specific route we have planned and get to camp for a cold beer with a good view.