The navigation radio is the second most important after market piece of equipment on my truck. I've used it as far west as Portland as far south as San Diego and El Paso, as far north as Oskaloosa, IA and as far east as Goshin and Dallas. I love it and when towing with an overall length of 56 feet it's a lifesaver. Don't forget you can also have Sirius with that radio and read the artist and song title on the screen. Go back and forth between AM, FM, Sirius, remote CD player and Navigation with the push of one button and without interruption and with instant response. (I don't have the CD player) I almost always listen to the radio while the navigation function is on the screen. If I'm listening to Sirius and wonder who the artist is I push one button and read the song title and artist name. Then push the Nav button and I have instant positioning no matter how long I have had Sirius on the screen. Good pice of equipment and worth what ever you have to pay. One other thing, (IMO) the only people who think the screen is to small are the people who don't have it.