I bought this unit from halford just before Christmas 2011 and paid £179.00 comes with live services and free map upgrade for 12 months, its been 2 months and i use it every day in London, i am glad to see not for 1 sec this unit lost signal in city like EC postcode, i have been using tom tom since 7 years and my last unit was tom tom 1XL, that unit failed me and gave me heart attack every day losing signal in the middle of London is nightmare so that problem is sorted. its slightly heavy,but well built good screen and excellent speaker, mount can be left in the car, its slightly tricky to dismount you need boath hands free to do this because of strong magnet but good side of strong magnet is unit feel very sturdy and don't wobble. upgrading is very easy PLEASE do not use old application, instead MY TOM_TOM is for this unit (online) live service is very handy with google search,finding local places is easy but i feel its expensive to pay 49 pound a year.