LED technology: In principle, well ...

Basically, I find the LED technology in "light bulbs" very good. The color temperature is warmer and therefore more pleasant than in the energy-saving lamps previously known, also the immediate brightness is at power. And 60 watts as in this case, are more than adequate - I come before you as the old 100-watt bulbs. The size is similar to incandescent lamps, so that the new bulbs fit easily in the old lights, without making the optical broken.
Disturbing is far but the lack of durability of the lamps. While the Exchange is at Amazon problem, but a burning time of less than 10 hours until the defect cost the 4th and 5th star, I would have otherwise awarded.
PS: When buying LED lamps always compare prices - the sets of 2 are not always cheaper than two individual lamps!