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@CANNASIM! Well I would go with QBs, I'm more than happy with the ones I got recently! Basically PCB boards have a better coverage than COBs that are focusing light onto one "hot spot". Plus, LM301B diodes have been showing awesome results both in labs and in real life, so in my opinion a QB setup with LM301B diodes is the best grow light you'll find on the market. HLG is not the only manufacturer, I've got mine from a UK based company (I can send you the link in private). Join the QB team you won't regret it 😉 Hope this will help, keep us up-to-date and happy growing 👊