I hear you. I’m not putting anything down either as it’s Just my opinion. From what I hear they are good as far as efficiency goes but without growing side by side I can’t judge the spectrum. Also have to realize yes efficiency is key but 1” of height makes more of a difference than 10% efficiency. I have been playing around with 35&55 watt cobs and there is a bigger difference between an inch or two then the 20 watt increase.