Assuming as I do that this argument will go on forever, it's probably worth posting Greg Cosell's assessment on Zeitler. We'll want to go back to it at some point.
Cincinnati Bengals OG Kevin Zeitler:
I seem to be in the minority here, and we'll never know how the Bengals felt because David DeCastro was gone when they picked, but I thought Zeitler was a little more complete than DeCastro -- I thought he was a better athlete. I thought he had more scheme-versatility, and he fits very well in a zone run game. I'm not sure DeCastro does. Now, DeCastro fits in the power run game better; that's what he did at Stanford. But given what the Bengals want their guards to do, I think Zeitler was the better choice, and would have been the better choice had DeCastro been available.