As far as navigation, it is the one step lower of the navigation. If i need to get to a location that i don't know, i would use my IPhone at that point. The bluetooth i mainly use for music on my phone or friends who ride along.
It fits great, I have a gray dash, and the mounting plates are black but i don't really mind, and it not very noticeable.
I ran the the microphone for hands free up the driver side A pillar, you might have to shout at it, but i'm still thinking on moving into a better spot. As far as the input, they are in the back of the unit and i ran them behind my firewall, and got the connections (USB) into my glovebox. The unusual thing is that it needs an extra cable to get the sound to work on iphones, its a double plug in, the headphone jack and the charging port. I don't know the price on that extra part.
Hopefully, that answers your questions, i will put pictures up today.