Which Bluetooth Mouse?

Hi,

Just got a new laptop with built-in bluetooth, and I want a new mouse to go with it, primarily for CAD.
I don't want to have to plug in extra USB dongle receivers, I want to use the built-in bluetooth.
I quite like the look of the Logitech MX Performance mouse, but this seems to need their USB dongle - does anyone know if this will work via bluetooth?

What about Microsoft's mice - any good? The Wireless Laser Mouse 8000 looks ok.
Any suggestions?

Cheers,
Paul