We're over ten years into the LED revolution, but mythology still motivates decision-making. Energy professionals need to know that "let's just go LED” leads to sub-optimal results. LED efficiency varies greatly, even within EnergyStar or DesignLights Consortium listings. As we’ll discuss, variance is at least 40% and up to 80%. Amazing federal programs that helped modulate the LED industry and track it are suddenly gone, so how do we judge? Smarter controls (and/or technicians) offer huge potential for commercial/industrial, but are still a challenge in residential. After a phenomenal success (57% drop nationally in energy for residential lighting 2001-18), there are still substantial savings available, and lighting loads will persist in low-carbon buildings. We'll also report the latest in inane “light bulb wars.”