I think this one is awesome
http://www.amazon.com/MiniSuit-Nexus-Bluetooth-Keyboard-Rubberized/dp/B009WSCW4S
Few notes. I find it so strange that there are not more pictures of this keyboard/case. One great thing about this keyboard is that it snaps on the front of your nexus and the bottom of the keyboard looks exactly the same as the back of your nexus. This a huge aesthetic highlight for me and none of the pictures on amazon do it justice. I really like the look, feel and compactness of it. The size and functionality is good too.
One flaw that they may have addressed by now. The case makes the nexus screen turn off if you put it in a certain way.
Here is a video of the problem and a fix: