My dilemma is I don't know what I can offer in terms of comments as I have no expertise in this area whatsoever.
This latest sample looks good to me - I'd definitely be more than satisfied if the final product looked like this. I didn't notice any color bleeding, and what haloing I saw was minimal. My only issue was there appeared to be a fair amount of macroblocking, but I chalked it up to being a low-res clip.