I found this video showing the difference in a couple popular fixtures when it comes to coral growth vs coloration. I found it interesting that Kessil has a seemingly distinct advantage in color development over some matrix fixtures although the matrix fixtures provide faster growth. I guess this is an indication that a combo setup is best when we want to achieve both growth and color development! And to be clear, he doesn't just compare nicrew vs kessil, he also shows the same type of coral in his display which yields the same color development as the nicrew although he is using Ecotech XR-15s and T5 combo - so it isn't just a "kessil is better because it costs more than nicrew" situation.
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