Okay, I got this so I could see the keyboard at night. No other reason, and it does not disappoint. Connected perfectly, colors show up clearly, all good. Only 'complaint' is I think all keyboards need a discreet off-switch. You've got kids? You need an off-switch. My 4 year old is getting great running macros on this board, so I guess that feature works well too.
I've been using Steelseries keyboards for a long time. Was hesitant to try the Corsair. Am very happy. Took a week to get fingers used to the macro buttons but OMG are they handy. Will be replacing like for like in the future.
Great lighting, iCue works well with both items, especially the mouse. Keys are not too stiff. Feels great to use. Takes a little getting used to the function keys being there, but all in all, a good product for the price.