In reply to Kiwi2000:
I see blown out whites at any setting.( I am currently using the HD setting @ 40%)
**The Darbee shouldn't be blowing out whites. If it was, believe me, we would have been reading about it for months now!

You may want to recalibrate your entire set-up.
I see noise on HD cable images not present when Darbee is off.
**Possible. I've found that on compressed satellite HD images that the Darbee can create some additional 'noise' in the picture. I've found that to be the case with Blu-rays that have a heavy grain structure. However, the Darbee, to me, still makes for a more pleasing image overall.
I see a perceptible increase in the quality of black images.
**That's great! The Darbee doesn't make black levels better. It creates better contrast between lighter and darker which can lead to a perception of increased black levels. Always a good thing.
Still images look very different with Darbee on or off but I do not find the same striking differences with moving images.
**That doesn't mean the difference disappears when the image is moving. It is still present. Keep testing still vs. moving images and your brain/eye coordination should eventually be able to see the Darbee processing on moving images as well. Close-ups especially.
I am not seeing 3D without the glasses.
**Nor should you. Please don't buy into the hype that the Darbee creates 3D imagery out of a 2D picture. It doesn't. What it does it gives better contrast between light and dark which creates an image that can
possibly have a 3D-ish look. It WON'T be 3D.
I am unsure whether the treated images look better to my eyes than the untreated image.
**More testing will determine that for you.
The cost of this product was the same as a 3D repeater and a couple pairs of 3D glasses.
**Again, it does NOT create 3D imagery like wearing 3D glasses watching a 3D Blu-ray movie. Two completely different things. But, the current Darbee will enhance a 3D presentation.
I can confidently state that 3D upgrade offers more bang for the buck, at least for a couple of people as the costs are the same.
I will play with Darbee a bit more and maybe get some input from members on tips and tweaks, but as off now this upgrade is not worth the cost.
**Best wishes.