Hardware Pacers has posted a review on the Logitech Cordless Desktop MX 3100! Here's a snip:

This is a near perfect mouse and keyboard combination. The mouse is rechargeable and has tilt wheel and Fast RF technology. The keyboard and the mouse have buttons that could never be thought of being on a mouse or keyboard. There are no downsides to this combination. This combination is recommended to anyone who desires a high quality keyboard and mouse with the latest technology.