I bought these bulbs in August 2013 and already there quaprès 8 months, small grains disappear in light, for a lifetime 20000hrs I think this is a bit expensive ... the light bulb! Lighting shame because I really liked the first day of course ..! very white and powerful; A judged you, but I'll look for something else to replace them. And now ... A little over a year after purchase (November 2014) 2 bulbs completely cramées ...! or even "DANGEROUS" because once extinct grains, its just the printed circuit starts to smoke ...! It is best to quickly remove bulb before starting fire. I really recommend this type of bulbs.
