Review
The Clarion NX509 is in a class with higher end Panasonic 2-Din Nav kits.

Seamless Touchscreen navigation. Takes about 5 minutes to get used to how to change from audio to nav screens, but once you get used to it, it takes no thought at all.

What I like
The Navigation screen will automatically show with directions and voice instructions. Afterwards it will return to your audio screen. Quite smart.

What I do not like
Announcement volume level and key in ignition/seat belt indicator.