I know the Tom Tom works well in England, and has kept us from operating outside the law in a rental car. Yes it does know what adress ranges are available on various streets, but I think most GPS's do. I had a not so pleasant experience with a Street Pilot years ago that Garmin was never able to solve and it ended up being useless with no help from Garmin. That was a total loss of money spent on it and I haven't been a big fan since. I did have one on my K1600 that was OK though.