One of my friends has just bought one. He is on holiday for a week, so has let me borrow it.
So far I can't fault it! It gives everything you want to know (even a more accurate speed reading).
How much do you know about them? How much can I tell you?
I would have to say that if I was going to get one, I would have to look at the 'Road Angel' first. It has more features and the display changes colour to warn you (which is a bit better than having to read the display). Although both have sound, if you have your stereo up a red display is easier to spot in the corner of your eye!!!