"I have an enclosed globe fitting that takes small 100W (incandescent) bulb. Trouble with the usual CFL bulbs is they're either quite large or the light output is dim and yellow. These bulbs are great. They're quite small so I can get the globe back on without it touching the bulb, and the light output is nice and bright and appears comparable to the 100W incandescent. Typical 100W incandescent is supposed to be around 1400 to 1500 lumens - but that might be for a clear glass bulb. The one I was replacing was the opal/white type and although the technical details of this CFL bulb says 1200 lumens, it looks about the same to my eye. Only downside is its a bit on the expensive side for a lightbulb, but having tried cheaper (and yellower/dimmer) alternatives I guess you get what you pay for."
"Bought this as a replacement for a 4 year old low energy bulb in an outside light. My wife always complained that it was slow to start (took up to 5 minutes to get to full intensity) and was a fairly yellow colour. This bulb is so much better - virtually instantly at full brightness and a white colour. Hopefully it will last as long at the previous one!"
"We're using these bulbs in outdoor lantern fittings with a PIR and they are providing a decent amount of light but not enough to be a nuisance to the neighbours. The colour temperature is warm and the bulbs warm up quite quickly. They don't look as nice as a regular tungsten or halogen bulb but they use less energy and are more compact than some of the 'enclosed' equivalents (e.g. product 66890). So far the bulbs have been reliable, but I can't yet comment on the accuracy of the 10000 estimated lifespan."