I have a 320 xl QB kit and I just can’t get it dialed in. I have yet to produce even the same quality I get from hps. And def not on par with cmh. Maybe I just have the cmh dialed in for my situation but I’ve never seen happier, frostier, more colorful plants. I understand the science says QB are better and brighter than cmh. And I’d say a grower who can dial one in could kill my numbers, but I’d bet a hefty sum, my product will be better with better bag appeal. When it comes down to it this is my medicine first and I’ve found a fairly efficient light that pumps out quality product for me. That being said I can’t say I’m not disappointed in myself for not dialing in the QB, but I honestly think the light lacks something.