Spec me a wireless mouse

[Guv]

I'm after a wireless mouse. It won't be used for gaming.
Budget £20. Maybe a Logitech or MS?

It will be used with a laptop so if the receiver is just a USB stick without 2m of wire that would be great. I don't really want a smaller specific laptop mouse though.

 

[fobose]

Logitech V450 Nano Cordless Notebook Mouse (910-000624)

Has a nano receiver so you need bother to unplug it as it barely sticks out at all. However its a notebook mouse so will be smaller than a normal desktop mouse.