The low profile aluminium keyboards from Apple are silent.
Yes, these are the laptop style keys, they work quite well. I think they have 1 or 2 USB ports too right?
Yikes, rather cool but I think it would drive me bonkersSorry to be late to the party but what about this....
http://www.amazon.com/gp/product/images/B0010SLSOS/ref=dp_image_0?ie=UTF8&n=172282&s=electronics