I bought these with JDM ASTAR 800 LED bulbs Both are excellent and have almost the same light output. The only way to notice the difference was to manually set my camera's exposure and compare them side-by-side. That being said, LUYED 1550 seems to have a slight advantage in overall light output. It is not visible to the naked eye and was only visible through the camera. Even then they are very similar and I was surprised how close they were even in the cell. Of course how good the lamp preforms are depends on which bulb the reflector is in, but they have LEDs on all sides so they tend to use a fixed reflector. In my picture, the bulbs are oriented with their thick sides facing left/right and their thin sides facing up/down. As you can see there is a gap in the top/bottom of the JDM ASTAR 800 as this lamp has no LEDs on those sides. So even with a low light output, they are objectively better because they use more of the reflector body.
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