I have to say I have been extremely impressed with the traffic information info that comes through the RDS-TMC system.
As I drove out of my road I saw a large red circle with inner white symbol appear on the screen for a nearby junction I had to pass and not seeing one before scratched my head and kept going only to come upon 4 police vehicles at the scene of an accident. When I got home I checked the manual to find that meant there was a road closure or restriction, which there clearly was. But the fact the gps had picked up on information that could not have been long posted by the police was impressive.
Other features like roadworks and queues on journeys have been useful. I particuarly like the split screen at junctions/roundabouts/motorways that makes it so clear which lane/exit to take, with the birds-eye views almost making the view life-like.
And the system worked 100% in getting us round the Wales routes in May - even June who has been sceptical about sat navs finds the 370 route navigation system that good she is feeling redundant
OK, so it does not have the post code function that 2010 370's have, but it is very easy to enter a place/road name, quickly offering options and then with the ability to move the map cursor to the specific location wanted, it is no chore at all.
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Not having had an in-built sat nav before, I have to say it is proving very useful