If you could trace the mechanical keyboard renaissance that has been occurring over the last 10 years or so, it would probably go back to the original Daskeyboard by Metadot. It started out as a modern replacement to the old IBM Model M, and gained popularity with its mechanical switches and durability.
Today, Metadot announced the newest version which is available in two models: Daskeyboard 4 Professional, and the Daskeyboard 4 Ultimate:
Both models are available with Cherry MX switches, in Blue (tactile, clicky) or Brown (tactile, quiet). If you do a lot of gaming, you will probably want to stick with the Browns. See our Razer Blackwidow Tournament Edition Review to see why.
Clearly a lot of effort was put into the design, and this is probably one of those products that you need to experience first-hand to fully appreciate. There are some minor details like hex screws, an aluminum face plate, magnetic footbar, and it is specifically engineered to eliminate as much vibration as possible. Along with that volume knob, the Daskeyboard 4 looks like it belongs on a high end home theatre rack more than anything. Indeed, this is probably the exact opposite of the Cougar 700K as far as aesthetics go..
Above the numpad are a set of media buttons, along with a mute and a sleep button. Having a sleep button so close to other media buttons is a risky design choice to be sure, but it looks like they took that into consideration, and made it so the button sits flush with the surface of the keyboard.
It also comes with a pair of USB 3.0 ports, and features full N-key rollover on USB. Both models will sell for an MSRP of around $170. We hope to have a review for you as soon as possible. For more info, check out the official pages for the Professional and Ultimate.