LEDs are not all created equally. In general, more LEDs create more light. However, it is certainly possible that a single, well-constructed LED can outshine a group of poor quality LEDs. LEDs vary considerably in terms of brightness, color, and lifespan. Since there is no real industry standard to test LEDs, Carson generally tests them ourselves. We compare LEDs from many manufacturing facilities before constructing our reading lights. We test for brightness, durability, and lifespan. We then select the lights that will create the best value for our customers.