Well I Looked At best buy, Circuit City, And hhgregg
Now i am not sure how they were all hooked up however
I also looked at my sister-in laws when on vacation a few months ago and it was hooked up to a HDTV Direct TV Box.
They all displayed the same pixelation problem during motion.
I did read a review on one recently on a HDTV and it stated it had a faster than normal chip set I forget exactly what it said right now.
I also have not seen one playing a HD DVD, so i am not sure what that looks like.