+100 to the Logitech Illuminated Keyboard.
It could do with a few more improvements, but the backlighting feature works tremendously well, especially seeing as it uses a white light so everything is extremely sharp and clear through the alphanumeric keys so it is very easy to see in the dark.
The laptop style keys are very responsive and best of all for me personally, none of that loud plasticky clicky feel and sound which essentially makes the keyboard that more quiet, which is one thing that really put me off something like the Razer Lyscosa.