Due to the many good reviews I've ordered 5 of these lamps. Replaces were 5x 5 Watt Power saving light bulbs from a nursery lamp. I originally wanted to have only the "polluters" from the room, but was very pleasantly surprised by the brightness and the beautiful light color. With 4 of these lights I now have a significant improvement in the room obtained illumination within the meaning of brightness and color fastness, not to mention the fact that the light "fully there" immediately. A conventional 40 W bulb is in my opinion, significantly exceeded. The mentioned in other reviews 50 W in the correspondence I would sign, to get there.
In short form: + Very bright; nice pleasant light + Very efficient (7 W purely => 50W out) + Minimal delay (about 0.1 sec.) + Immediate full brightness, no "warm up" like saving lamps + Large footprint (120 ° - IMPORTANT !!!)
- So far not found anything negative, long-term experience I still need
Pay may still write an addendum, if there is something to report. Have any case the same again who ordered.