I picked up a nice one at a computer show (Pomona) for a friend of mine. It is RF wireless with a 15' range and is designed to be used without a desk. It is sized kinda like the one you linked, but with a bit extra plastic added around it. There are multimedia keys above the F keys. The two sides are a bit molded for better comfort holding it from the sides. Why would you want to do that? Because the right side has a trackball and the left side has pointer buttons. This is more of a HTPC keyboard, but would compliment the SFF PC nicely as well. I don't know where to get these things online, though.