HA!And I used to think that Halogen bulbs were the best....since trying these Xenon bulbs, I will never go back to Halogen bulbs again.the Xenon bulbs are just as bright, if not brighter, than the Halogen bulbs.I put in a new Xenon bulb the day they arrived (14/MARCH/2015) & as of this writing(19/APRIL/2015), the very same bulb I put in the lamp, is still working perfectly....I tried the same test with the Halogen Bulbs, & they quit working after the third or fourth day.There is just no way in Hades am I going back to Halogen bulbs...ever.The reason why I like these so much are:Cost:The Xenon are cheaper than Halogen.Durability:Unknown. too soon to tell. I have not bounced them around either, so I can not speak in truth about their durability.Brightness:The Xenon are just as bright as the Halogen, if not brighter...and the cost for Xenon is cheaper than halogen.To anyone who as a lamp that takes this kind of bulb, I highly recommend you toss the halogen in the trash& buy Xenon Bulbs. You will not regret it.Will I buy from this seller again? you can bank on it....yes I definitely will.