Cobs are powerful and efficient. Like fuel mileage. Hps and epistar leds get 20mpg. Cobs get 50+ mpg. Quality leds are expensive and more expensive to mount and wire. Unless they are on cheap printed boards which most eBay/amazon leds are and typically very inefficient. The 20% efficiency affects people directly in energy usage. 20% of every watt is light. The solution was quality leds but again the price skyrockets, Cree leds can cost as much as 7 dollars each. Where cobs come in is instead of buying and wiring multiple leds that's all in one single compact cob. Same and sometimes higher efficiency but less cost.
The reason I like to help so much is so people don't have to deal with the stuff I have. I also hate waste. Regular leds wasting 80% of their energy is complete nonsense! It's the typical overseas motto. Build it cheap because plenty of people on a budget will pay for them before doing any research. I hate to see people spend hard earned money on things like this too. So I help, and try to do so as much as possible. To be 100% honest I'd rather see 100 people convert their blurple leds lights to cobs then sell a single unit in the next year.
I doubt this will happen since I do feel these are a great niche in the market. Once people understand claimed wattage and real wattage are 2 totally different things and 120w @20% vs 50w @50% equal the same light output but will save money each minute in operation.
