I also read ATI along with another company(not mentioned, I bet ecotech) are the only two companies to produce a fixture with some unique blue led(new technology- I believe manufactured by Phillips)that is what makes a difference when we talk color response in corals. I can't find the article, if I find it I will post it here.
This is what you're talking about: ATI LED-Powermodul T5 + LED reef light with higher intensity blue Philips diodes, thunderstorms too
The diodes are not special, by any means, in that they're simply cool/standard blue LEDs, peaking between 470 and 480nm. That spectrum is missing from all cool white LEDs, with the Cree XT-E being the worst offender - Cree has removed significant portions of spectrum in the XT-E to boost their luminous output, sacrificing color rendition. Any fixture built using XT-E cool whites without supplementation by warm whites will and do look awful. This is one reason I am glad that ATI will be using solely Philips LEDs in their fixture.
I have a very long writeup coming up soon that will explain the commonly used LEDs, and cool blue from Philips is among them.

