This is good bulbs, for those who want the very cool white (workshop, bathroom, kitchen ...). It is roughly equivalent to halogen 35W flows. But color is colder still as fluorescent tubes. Admittedly, in a home, we often look for a warmer light (between 3 and 4000K), but in some cases this color temperature (8000K) can be as interesting. A light bulb was defective on 6 controlled (lower lighting than others); I await the return of Caesar Augustus service .. who asked me to send them a picture of the bulb! ... Waste of time. To be continued.