Yes, I'm definitely interested to see how the 4000K "c" using the EasyWhite LED in Zebralight, compares to the 4000K regular XML2 LED used in Armytek warm tint lights. The Armytek does appear somewhat yellow, though I've always just assumed that was because of the warmish 4000K tint. If the EasyWhite 4000K tint looks different or more white, that would be very interesting.