I've had this keyboard for a couple months now and I love it. It works great from the other end of the room (4–5 metres away from the receiver) and the touchpad is as easy to use as any. The scroll-wheel functionality takes a bit of practice to get used to, but feels natural once you get the hang of it. A big plus for me was that it mostly worked out of the box on Ubuntu Linux, including the touch-sensitive volume slider and the media playback keys.
It seems to need recharging less than once a week, even with heavy use and never turning it off. If you use the included stand to store it, you'll never have to worry anyway.
I only have two minor gripes: that the raised bars on the f and j keys aren't very prominent so sometimes my touch-typing is off, and that it's so easy to cover it in fingerprints (which would be less of a problem if the stand had somewhere to store the included wipe cloth). That said, there were nice surprises too, like the good-looking lights for the function keys, volume slider and touchpad, and the respectable size of the control, alt and spacebar keys.
All in all, it looks great, it's easy to use, and almost every aspect feels well-designed. I'll probably never use a wired keyboard again.