You're a funny guy. I don't know how to power CoBs???? I'm not the one powering them in parallel. Tell me this, when connected in parallel how do you balance the current to each CoB? Are you familiar with the pitfalls of connecting them in parallel, such as thermal runaway and uniformity? Did I say something that offended you? Do you think I have something against CoBs? CoBs have inherent limitations when compared to discrete LEDs. That's fact not opinion. There is no way a CoB's performance can be superior to discrete LEDs. You do realize CoBs are made with the same die as a discrete LED? It's only packaging. With discrete LEDs a design can tune performance to the task at hand with many LEDs to choose from. One place where a discrete design is going to kick a CoBs ass is when the discrete design can tune the uniformity and drop the fixture closer to the canopy than a CoB fixture. The CoB's 120° view angle with the bell curve is not your friend. A discrete design is going to get a bump in performance when it cools the single die down to a temperature lower than a CoB die can go. A heatsink can be positioned closer to a discrete die giving less thermal resistance. When the dies are spread apart, thermal management is simplified. And then there is the one undeniable fact where there can be no dispute. The Deep Blue discrete LED that is NOT covered with a layer of phosphor. That being the same Deep Blue LED used in your CoB that is covered with a layer of phosphor. If a CoB's Blue LED with a Red Phosphor Converter were more efficient at creating Red, why do Red phosphor converters not dominate the Red LED market? So what is it I am missing?