Great point about the mounting height. That is one of my current pain points... I built my canopy far two short. My Viparspectra are currently 6.5” above the water. I can squeeze another 1.5” max without having to make changes to my canopy. Dana Riddle’s review of the CC included a PAR mapping for the lights mounted at 6” and the results were impressive.
Based off the height I would change my vote then. My orpheks are 13” off the water.... CC would be more uniform that low. I would worry the orphek would not blend well that low. Fwiw my lights are 34” over the bottom of the tank and I get 300 par on the bottom.