i think the greatest advantage that the Armaggeddon Black Hornet MKA-3 has over a Corsair K70 is that the MKA-3 uses a standard layout so that you can easily get high quality keysets to replace the stock keycaps. both are using different type of design, Corsair uses exposed switch-top kind of design (where you can see the switch-top from the side) whereas the Armaggeddon the common concealed switch design.