Technically the bulb produces very clean and solid. The light color is very good and that of a traditional light bulb. Since this lamp shape generally is not cheap, the price is certainly justified. The brightness value (lumens / watt compared to incandescent bulb) and the color value should be correct. With 51 Watt Savings makes 1,000 hours burning time per year, in Austria with green electricity (20 Cent / kWh), 10.20 cost savings. Since at this time probably a conventional light bulb gives up just your mind, this bulb will pay for itself very quickly. Especially since you will be advertised with a lifetime of 25,000 h. Because of that I have now completely changed not only our house and our apartment on LED (since 2012/2013), but also many relatives and friends convinced have and look after you for this topic, I know that the bulbs generally very durable are , From around 100 different LEDs 3 or 4 have become broken in the last 2 years. All I could exchange for free.