Conclusion: If you think the cost is high for a keyboard, you're right, but the Das Keyboard Model S more than gives you your money worth. With gold-plated mechanical key switches (rated for upwards of 50 million key presses), you can both feel and hear the elegant, comfortable typing experience you'll receive.
Pros: Provides an outstanding experience for both the fingers and the ears. Hefty construction. Integrated USB hub. Can support full n-key rollover. Now works with KVMs.
Cons: Very expensive. No media keys. Full n-key rollover requires PS/2 port connection. The Blank Ultimate version may drive non-touch typists insane.