Can I ask a basic question about choice of Sat Navs; there seems to be an enormous range of machines available, but what features are a 'must have' and which are 'nice to have but will probably never use them'? The Garmin 250W seems to be a safe, middle-of-the-road (sorry, no pun intended!) model that has most features you might want for Irish (and occasional) UK driving, but how much further up the (price and model) range should you go for useful features, before you end up paying too much for features that are not needed? I can't just leave the choice to Santa without doing a bit of homework for him! Many thanks on his behalf!!