Hi all,
A question for for those of us not fortunate enough to have integral sat nav .

Anybody got a preference and why ?

After 3 months in my new job I can give you some real everyday advice. We have 40 delivery teams operating from our depot, delivering hire cars far and wide, all drivers are issued with a PDA which has Co Pilot on it, no body uses it. We all have our own Sat Navs, all makes and models. My own is a Navman S70 and once set up to your own preferences it works very well, has only been stumped once, an incorrect postcode, but by entering the street and town it got me there. All devices do basically the same job, some have very useful features, mine tells me the name of the road you are going to turn at, so if there are two together you know the right one, Navman also has Navdesk for your PC which logs all your trips and keeps a record of all the miles driven, it also has a pin lock so if it gets nicked you know it will shut down and be inoperative. The Tom Toms are the market leader and have the feature of displaying the speed limit of the road you are on, very useful. They are also easier and cheaper to update which is vital, new roads, junction alterations etc happen faster than you think, so being able to update is vital. Speed camera warnings are also cheaper to apply to Tom Toms. When my Navman breaks I will get a Tom Tom for all of the reasons given.
The only unit which I have seen which I would not want is the Garmin Nuvi, if it does not recognise the postcode or street / town entered, thats it, game over, the Navman allows the option of going to the centre of the postcode, ideal if it is a new housing estate which is not yet on the database, get one which allows you to set your own preferences for type of route, shortest or quickest, motorways or A roads, don't buy a basic or bottom of the range model, get one which will not be out of date in a year or so.
Good luck.