Have the lamps selected due to customer reviews and to replace 40 W halogen. They are a bit clunky and I had therefore feared that they are too big for the light, but they could be used well. However, I would want a better grip (can also be due to the version). The lights seem to be not quite as bright as the 40W halogen lamps. Can be that the lamps are quite large and therefore the light is less concentrated, which is also convenient because it appears less. The light is very angenhm also on the color. The lamp does not flicker and and are also no sounds. If they now hold so long as promised, I am satisfied.