These are the important things a Great denoiser should imply in my opnion... I tried many many many in the last days, and the one that still does the best job for me is:
PixieDust()
For a movie where you seek the best quality/compression possible I'm yet to find a better denoiser... It's rather strong, so you ought to put it before resizing. This also requires more time, but it's worth it, especially when you resize to smaller resolutions afterwards (352xxxx).
The only thing that bothers. That filter is awful slow and it seems that the Dust Filters are not being developed any further...
Here comes the question... What filter do you guys think denoises better or as good as PixieDust() and is a little faster? Just give your opinions, I'd love to try them all out!