Bought 2 of these bulbs earlier this week and finally got around to installing one to see how they stacked up. They are 50 lumens short of being equivalent to an incandescent 60 watt bulb but I can't notice since the light seems to be whiter. They come on instantly unlike the fluorescent bulbs. They are supposed to last 25,000 hours, we'll see, I wrote the date on the back for future reference. The bad news is that they cost $11 per bulb and are heavy. They are rated for damp locations but not for enclosed recessed light fixtures since heat is the enemy of the electronics of an LED. Just my 2¢