Even though the industry seems to be heading in the direction of quantum boards, I still love COB lights. I feel they get better penetration. And this Rapid light is my favorite. It's just so flexible in the way you can get a bunch of these and configure them in whatever way you want. I did a whole write up about the Rapid LEDs at https://growlightinfo.com/rapid-led-diy-cob-review/ but basically, these DIY COBs probably the best value on the market in terms if the output you get for your money. And Trimleaf is the best place to buy them.