The Moshi looks like a frame with glass in the middle, the outer part comes in either black or white to match color of iPad and middle is clear material that seems a bit thicker than other screen protectors I have used but the clarity and response to touch seems to be as good as a bare screen.
One other option I have seen, but not tried, is this one by Seidio:
http://www.seidioonline.com/apple-ipad-2-3rd-4th-gen-vitreo-p/sptipd3-cl.htm
Quite expensive though. I have had good experience with Seidio products, cases, so I imagine it would be similar to the Moshi when you look at the installation video.
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