It would appear that ivanman636, posting on another thread, has found a decent spec navidroid unit ( NOTE this is only to replace a 5" unit however ),
It would appear to contain all the original units features.
I'm going to email them to see if they do a unit of equal specifications to replace my 5.8" unit.
If I was to lose DAB I wouldn't be too bothered - more interested about gaining the ability to get a decent satnav system, ability to easily wire in a reversing camera, watch videos, gain mirrorlink plus the bonus of a higher definition screen.
The description in english is towards the bottom of the page :-
http://www.ebay.co.uk/itm/Navidroid...4-4-GPS-7-HD-BT-WI-FI-Quad-Core-/222025843214