Despite having the USB receiver plugged in at the back of my screen, I find this keyboard and occasionally, my mouse, briefly lose connectivity.. The signal is just not quite perfect.
The keyboard itself is very heavy, yet the weight of the battery does not appear to translate to good battery life. I find myself charging one per week. My previous keyboard required charging once every 3 months.
Keyboard illumination seems a bit erratic and it has a poorly placed and easy to bump LOCK button when picking it up.
It does have a nice feel when typing. I would buy it again I guess.