Great lighting, installation is not always easy

Have the LED lights used as a substitute for ESL 7W bulbs. I can only say the brightness is overwhelming compared to the 7W ESL lamp. There are worlds between the luminosity of the ESL and this bulb, and the only 5W power.
But one point I must deduct, since the installation is not always and everywhere without difficulty. In use as a ceiling light, as usually in such lamps, held the lamps by yourself klemmendem spring ring in front of the windscreen. Unfortunately, this LED illuminant a protruding inner edge. As a result, the conventional spring ring amended not be engaged in the groove provided. Only after I had the spring ring gently bent with pliers and new curved handle, the LED bulbs lies reasonably sure secure. Therefore, a point deduction.