I am finding that we seem to be buying an ever increasing range of light fittings that require halogen bulbs.
I used to buy the bulbs from the supermarket in small packs of 4 which worked out fairly pricey for each individual bulb. This pack of 10 bulbs does work out at quite a saving per bulb when compared with the smaller packs.
The bulbs give out an incredible amount of light, firstly considering how small they are and secondly that they are 40w equivalent. The older, redundant style light bulbs at 40w were incredibly dim. I guess it helps that many of our ceiling light fittings require 3-4 bulbs so that does increase the amount of light. However, in the kitchen breakfast area we have one pendant light that takes just one bulb and that is perfectly bright enough to eat, read or just sit and enjoy a coffee with friends.
I did initially find that these bulbs didn't last anywhere near the advertised life span. This was especially noticeable in the light fittings that require 3-4 bulbs as it seemed that one of them was forever running out. However, after chatting to an electrician he advised me to wear latex or rubber gloves when changing the bulb. He said that the grease on your fingers shortens the life span of the bulb. I don't know if this is true or if there is any scientific reasoning behind his advice but I have followed it and the bulbs definitely seem to be lasting longer. In fact, since I have changed them using latex gloves they haven't needed replacing, which is unusual for our light fittings.
So in conclusion, if you use halogen bulbs these are a decent pack to purchase - and give the gloves a try!