Illuminated having a first generation, the latter and very similar. Only the "chiclet" keys differs and the trackpad which replaces the numeric keypad. Connected to my laptop connected to the plasma screen, navigation is very good but I still prefer the wireless mouse.
I also liked the rechargeable battery, it saves battery consumption. Good battery life for now, I do not know how long this will take.
In conclusion, a good keyboard to interesting position (eg home theater) but at a price a bit too high I think.