I also very happy but ...

it works very well, it is small like the keyboard of my laptop, it is very light.
Unlike my laptop keyboard shortcuts Fn + F4 / F5 / F7 / F8 / F9 to manage the screen brightness and sound seem absent, but this is no big deal.

typing is comfortable, not soft like some.

By cons I struggled to open the battery compartment: we must strongly press down and then in the direction of the arrow.
it installs itself, just plug the receiver into the USB port.

... But he laché after 3 years (edit 21 June 2014) without ever being dropped is a bit short.