Yesterday I bought Razer's latest mouse the Proclick Mobile:-
Specs:
1200 DPI optical sensor
Bluetooth 2.0 with Adaptive Frequency Hopping
Ambidextrous
Long battery life enables continuous usage (2 x AA batteries)
Travel pouch
Available in 4 colours
I bought the white one, wish there was a silver one to match my MBP

Pairing it with my MBP was easy as you'd expect.
The feet are made from teflon which means it moves smoothly and doesn't get ruined like most other mice do on "funky" surfaces.
The scroll wheel is a soft, clear plastic which pulsates a faint red when you use the mouse and there is a pulsating led light in the Isle of Man logo when the mouse hasn't been used for 10 seconds which can be turned off if you desire (I imagine to conserve battery power).
The body is made from a fairly thick plastic which feels very durable. It has a non-slip surface which means you gain a good grip on it.
Size wise it's a portable so it's smaller than a desktop mouse, but because of the shape it is very comfortable in your hand, unlike some portable mice which seem too short and flat, the mouse doesn't curve inwards near the bottom makes it feel larger in your hand.
It's a three button mouse with left and right buttons that have a audible click and the third being the scroll wheel which you depress like a logitech. The only thing is the scroll wheel is rather lower than a Logitech and at first it seems as though you need to apply more pressure on the scroll wheel in order to activate the third click, but that is more aesthetic than real and I soon became use to it.
Because the Razer uses BT 2.0 and is 1200 dpi the tracking is brilliant. I found I had to get use to the idea of using less hand movements in order to get the cursor to track across the screen and in Photoshop using the Lasso tool was a happier experience as it followed through without a hitch.
It's a great mouse and for those of you who like portables but can't deal with the discomfort the smaller mice often incur the Razer is your solution. As a BT mouse it has to be one of the best on the market so far considering it utilises BT 2.0 and is 1200dpi for quality tracking and response.
Retail price is around $70.