I agree that there are some features that are lacking but I have grown to really like the Nav system. I just finished a 3000 mile road trip and had no issues at all.
It directed me where ever I wanted to go (and even some Mex resuraunts I decided to pass by).
The screen size is much better than the TomTom 910 I used to use.
The dual display option is cool on the interstate. It will show you the exits coming up and what POI you can find at them.

You don't need to select what part of the US you are in for normal operation, it knows. The selection of area is to limit the search area for addresses or POIs. (kind of a pain tho)

Best of all, I don't have to worry about a tangle of cords or theft of my portable device