I have tested two different locations. First, in the ceiling light in the hall, here the diameter of the LED is slightly larger than the conventional light bulb shape, so that the heat shield of light is on the LED, so here you have to work with glue or the like, if you want to avoid this. The Abstahlwinkel in this horizontal mounting on the ceiling does not correspond to a conventional incandescent lamp, so that the round glass cover is not evenly illuminated. The light output and color temperature in the room is comparable and I liked. Then I decided for installation in the kitchen, because the LED comes here in the normal to use. The light output and color temperature in the room is here compared well with the previously installed 40W bulb and a cone of light can not be seen by the larger kitchen lamp construction.
The manufacturer promises a lifespan of 30,000 hours, which corresponds with 24h / day in about 3.5 years, with a warranty of 4 years. Likewise, 200,000 switching cycles are promised, which should be sufficient for a number of years as well. According to sample calculation Osram LED will keep order during normal use for 30 years. Until then, I'm almost retired! If this is really true, then the higher acquisition costs are really well spent and worth 5 points.
