The other day I tried to update the SD card and get the newest maps for my Clarion head unit. In doing so something got messed up and my GPS wouldn't show any streets on the map at all. Since I didn't care for the Clarion unit that came with the coach I bought the Pioneer AVIC 8400 NEX head unit. Installed it today and it works perfectly. Music is better and the GPS in what I am familiar with. This new unit has Android Auto which the Clarion did not so overall I am much happier with this unit. Not cheap but way better. Now I am debating if I want to update speakers, sub woofer, and amp.