The text will work in the nav if you have the dip switches set standard. Unfortunately, as soon as you switch to the maps for example, it switches back to text in like 7 seconds so you can't use the nav system itself while text is on. I have it hooked up to have no text and it has an aux input, and it is really solid plus the sound is great. You can't go wrong with a USAspec. It's a PA12 and they have great customer service as well, just my $.02.

Besides, text display might seem nice but not while you're driving and you should know the name of the song that is playing on YOUR ipod