I have been messing around with cineform and Premiere Pro.
Thought this might be interesting to a few people.

Zooming in with uptop material still looks nice, but when it comes to zooming in with my underwater material, it's a different matter. I can really see the quality drop even just 10% zoom in when editing in HDV mode. I can see this on my high res LCD monitor and the normal DVD's I have made to view on a normal TV.

I have also been doing side by side test of underwater material encoded at high and medium rate. Cannot pick the difference even when I drop both clips side by side on the timeline or screen grab in photoshop. In some shots I would swear the medium is better?

Cineforms real time color correction is also very good.

Paul Wags

I've found that I can't see much difference between medium and high codec quality settings...so why use up the disk space?

...you might find some difference if you put the footage under some stress....heavy color correction or special effects, though I've not hit this point personally.

personally i haven't done that many tests with the different qualities. I'd be interested in knowing what the files sizes are like. Comparing the two, high and medium.