chipset

Hi I have recently changed my car from a C 350 CDI Estate 2012 to a E Coupe 350 CDI. Before part exchanging the C Class with MB dealer they removed the Brabus D6S which I now have for sale. The attached photos hopefully provide all the technical details and I would advise emailing Nils Jacoby...

I've got the TomTom Bluetooth GPS Receiver in one car.. working with a PDA and now have an option of getting a Holux GPS cradle to work with my XDA2 phone. However on closer inspection the two SiRF chipsets are different types. I wonder if anyone has any experience of comparing the functionality...