What do people think of these

7" Audi A4 S4 RS4 8E 8F B9 B7 Seat DVD GPS NAVI DVB-T | eBayt seams easier than going for the Audi unit and the Bluetooth. But do they work properly,
It says it runs Navi wich is fine by me with the windowsCE6.0 which i have on an older PDA that runs really well.

But has any one taken the plunge?

Cheers Mike