I have the Osram Halogen Energy Saver Classic bulbs used as a replacement for traditional 60W bulbs. Unfortunately keep this indicated only instead of the 1000 hours approximately 200 hours which is very little, of course. One throws but a close look at the package, so we also learn why. 1000 hours marked with a * and the side bottom of the package (but unfortunately not appear on each package) you can also see (very small) what this means. The halogen bulbs are apparently only provided for use in a vertical position, ie with the glass envelope up or down, but not like in my case, with the flask aside. This appears to reduce life drastically, therefore only 2 stars. At least for the operation in a horizontal position, I can not recommend experience with a vertical position I have not been this halogen bulbs thus. Otherwise, the brightness equivalent ago, in fact in about a conventional 60W light bulb, also from the light color. However, the savings (42W to 60W) is small and really only worthwhile if the bulb should light long day. Who really wants to save energy, you have access to the LED versions, but again this is worth it (so far) only where there is daily a long burn time, as prices are currently still too high.