Logitech G19s Gaming Keyboard Review @ OCC
 

In the end the Logitech G19s was quite the spin on keyboards. It's not quite what Razer has with its touchpad screen, but it is quite fancy when it comes to just being a discrete screen. Other keyboards on the market (at least in the past) either lacked color, lacked so many app choices, and were just a neat, clunky, expensive add-on. I will say I'm not sure that I'd choose the G19s over the G510s despite the full color display and additional apps. The upcharge to get such effects is almost a full $50 from the G510s (and more depending on where you are shopping) making this keyboard quite the costly chunk of keys.

http://www.overclockersclub.com/reviews/logitech_g19s/