Small Bluetooth travel mouse?

Hi,

Am looking for a small, bluetooth mouse with these criteria:

1. Suitable for travel i.e. small - I know some don't like small mice but I don't mind.

2. Bluetooth, not RF-cordless.

3. Relatively ergonomic.

4. Preferably with charge-from-USB ability

5. Smooth use/High resolution - this will be used for editing photos.

6. Actually works well.

Any advice most welcome. By the way I've tried the MoGo mouse and while it is cool, I don't think it's ergonomic enough for everyday use.

Thanks!

A bit of web-trawling has found....

Logitech v270
Logitech v470
RadTech BT500
Bluetake BT500+
Microsoft Bluetooth® Notebook Mouse 5000
Razer ProClick Mobile
Genius Traveler 915BT Laser

To the two previous posters.... have you compared the v270 to the v470? Impressions?

Anybody tried that last Genius one? It looks pretty nice...