Blue blobs have started to appear on my OEM Dash Nav Screen so it's time to get in a replacement.

I researched both the Dynavin vs Hualingan some time back and wasn't convinced as it removes some of the standard functions and bluetooth appears a bit wonky on the new systems, but recently I came across this:

GPS BMW E39 E53 X5 E38 Navigation CAR DVD Navi 5er 7er | eBay

It could just be an update, but was wondering if anyone had any further info on it, or any suggestions for the best replacement currently available, mine won't last much longer by the look of it and I won't get much for it with a busted screen.

UPDATE: Found there website - http://en.auvidio.com/index.php?id=1 (looks like these guys are still in the setup process) these guys might actually mean business and not be a cheap cloning factory, they are looking for technicians worldwide to fit their systems.