According to this website http://www.audiosources.net/viewproduct.asp?id=930 This one does have the bluetooth phonebook and displays caller ID. YEaaaaaaa
The waywell and audiosources units are the same ones, it's just unclear who actually manufactures these. best quote I've had for either is the £360 + whatever import tax + no real warranty.
I liked the idea of the uk based dealer in case of problems.
It looks like take a punt on the waywell or wait a while for a phonebook edition from the uk guys.
I'll probabally wait.