I've ordered an Acer V210 from Amazon (via Kitz's shop, natch) because the basic V200 version got a good review in PC Advisor, but this model has free for life TMC traffic updates. It apparently does the navigating very well, but doesn't have all the gizmos that you never use like MP3 player, photo viewer etc etc.
Only one snag. It's not in stock!!! I shall have to be patient.