When replacing the bulbs, I compared the Bioledex LED directly to the halogen bulbs. The color temperature of the LED bulbs is the halogen bulb very close. The luminosity is less than the 18 watt halogen bulb, but in my ceiling light still sufficient (Bioledex indicates on the package that the bulbs of 12 watt incandescent equivalent). Many small LED lamps suffer from a high-frequency flicker and sensitive people can perceive a "strobing". This also applies to this bulb. If you move close to the Birnchens quickly hand, you seem to see still images of the hand. In my ceiling light strobing 10 spotlight goes but completely in the light of the flickering glowing under GU and he is no longer perceptible already from less than 1 m. The Bioledex LED works fine on AC switches (no lights turned off).
When the LED bulbs are turned on, they are almost indistinguishable from a halogen bulb. Lower power consumption I could through the exchange of lamps previously 54 watts to 6 watts. For this lamps I can issue a buy recommendation.