I'm a 5armigen lamp, which was bought "standard" with 5 x 9W energy saving light bulbs, replace the defective and constantly funzeligen energy saving against these LED products. For this I had to read long reviews, because due to design allowed the plastic lamp base not be wider than in the previous lamps. This was when this is the case here, the manufacturer and supplier seemed serious to me, and with 470lm they seemed bright enough. I do not regret the purchase, they are significantly brighter than the 9W-Energiesparfunzeln previously, instant full brightness and give no buzzing noises of itself. Although of course I still can not say anything to the important factor "life", I am so far satisfied with the parts.
