I am off on a trip next week and have been keeping an eye on the Sat-Nav apps. I see all of them do not provide live traffic information which is the key issue I am waiting for really but unlikely to appear by next week. I like the idea of the proposed cradle's coming to market which I can use once they appear. From the looks of it TomTom's cradle will have built in GPS to enhance the iPhone whereas Navigon won't. I have also read by TomTom that any update to their app will need a full re-purchase whereas Navigon has just issued an update free to all current owners. As I cannot try before I buy and there are mixed reviews for all Sat-Nav apps I am a bit tentative before I buy. What's your advice?