Have a read hereGiven that the only job is to pass digital information to the Lumagen (and what the Lumagen can do), then I'd say it's pretty poor it can't do that properly.
How does the ACE calm down picture noise?
You can get a bluray player for £50. Once you get to the prices of the units you're talking about it's not a given that you get a picture quality improvement when you double the price. So I wouldn't expect a unit at twice the price of the ACE to give an improvement either. The Lumagen is doing much more work with the image, but most of the time I see people comment on an improvement from the 4 to 5 they're talking about audio.
That's also weird - if it's easy to tell the difference, it's quite surprising if people don't believe it.
I dug a little deeper in the Zappiti website to find out there’s a ‘Audiocom Cinema Edition’ of that same player.