I have Tom Tom 6 on DVD. It's an excellent GPS system and recognizes all postcodes I've stuck in. It has great functionality with itinery planning as well.
Only two small bad points; You can't customize the warning sounds very easily, whenever I pass a speed camera I have to make do with some bizarre whistle sound and secondly, you can only install it on two products. If you buy a GPS phone for example, you have to send the original receipt for the phone to Tom Tom before they'll give you a third code, something that isn't made clear in their sales information
Apart from that, all good.