I got the Seidio Surface.
Very beautiful case. Its very thin, believe its just 1mm thick.
Feels very nice to the touch, easy to put on... easy to take out.
Nice access to all buttons.
However, since its so thin and all that stuff, not sure its good for protection. Probably just minor? I got it more for aesthetics reasons because I love that sapphire blue.
However, still offers some protection over not having a case, but obviously less than a more bulky case like my old Case-Mate Pop.
Basically, everything about the surface feels and looks nice.