I've been digging around trying to find some more information about all of the potential future Bengals and saw this site in a Tweet from Joe Reedy. Here's a breakdown of Newton, Gabbert, Ponder, Mallett and Kaepernick: http://www.universaldraft.com/south-florida-sun-sentinel-draft-winds-2011/south-florida-sun-sentinel-draft-winds-2011/ . It's not a quick read but much more detailed then what you typically find on the Internet.
I believe someone posted a link to the Christian Ponder review but there's much more. After reading all of these, my opinion of Cam Newton changed and I liked Christian Ponder even better. One CP for another... :)