I only just found out yesterday the voice on the amundsen lets you control the music by voice as well. Impressive

That's fine whilst you are in a good 3G or 4G area - outside that it's useless.

I want the map on my phone as I also don't have unlimited data.

Google allow you to cache maps for offline use. You can pretty much do the whole UK.

Google nav is pretty much Waze as google owns it and the traffic data is pretty good. On a par with Tomtom live easily

Edited 26 March, 201610 yr by Mallettsmallett

I will confess to fitting a new Brodit mount to the car for the TT.  I'd use the new on-board system if I ever got stuck and didn't have TT with me, but I'm too used to TT - I know its limitations, I can program it in the house, it is already full of my POI's, I can put the speed cameras into it easily and to my mind it has a lot going for it.  Maybe if I wasn't already a regular user of a separate system I'd probably think the onboard system was the best thing since sliced bread, but with me I think it is probably better the devil I know.  When the devil fails, or I drop it on the deck in the middle of no-where then I shall be very pleased to have what sounds as though it would be quite reliable backup.