My non-nav system is disappointing to me (never played with the nav version). The voice recognition is mediocre. I've programmed numbers into it and got it to work as designed, but in general, it's mostly useless.
I just wish they had a simple pass-through mode that allowed me to press the button on the steering wheel to take the phone on and off the hook and to allow me to talk to my phone (which has much better voice-rec and menuing). Also, my phone has all my numbers in it already, what is the point in storing them in the truck?
It seems to be the consumer electronics curse where every device expects itself to be the center of the world. Like I'm going to base my whole wireless phone world around a clumsy device that holds 16 numbers (which I've just found out here).
Generally poor engineering all around. The random play on the disc player won't randomize over all the discs in the player if they are MP3. Why? Who knows? And now the always-on, yet useless, Bluetooth is interfering with my wireless backup camera, and I can't turn it off.
But, nits in an otherwise great truck (and the stereo sounds good, which is the main point). But, it was an expensive option, and I deserve better for that money.