Garmin nüvi 660 or, if you want US and EU mapping, the nüvi 670.
Recommended price for the 670 is $1178 and for the 660, $964. But you can find the 660 for less than $700 at Ama*on.
Try googling and you should find some good offers!
The UK version of the 660 doesn't have the FM transmitter, but otherwise it's the same as the US version. I've had one for about 3 months now and it is really excellent - although hearing it trying to prononounce German street names can be a bit of a laugh!