The MSB Ipod doc is much better than the Wadia. They actually re-clock the digital signal so that they reduce jitter to almost zero.
These statements have no merit. Seeing that the iTransport hasn't been delivered to people yet you are making speculations on which performs better. Futhermore, if one uses a DAC that reclocks the signal, the best place to do so from what I understand, this is a non-issue. Not to mention you must modify your iPod with the MSB.