We replaced all our bulbs with Full Spectrum CFL's back in 2007. That would be about 60 bulbs. Three were out of the package defective and were returned to the store for replacement. Since then two have blown.
My husband works with colors so it is necessary that the light from the bulbs be true and bright. So far, so good.
I have to wonder if the folks that complain they only last a month or two are cheap-charlies, or if they have bad electicity.
Because of the military jets taking off on 36 or landing on 17, and fly over the house down to 500ft, Edison bulbs get shaken to death around here.
It was worse, back when the B-58 Hustlers were flying over, back in the day. ;)
/johnny
I have had CFL on my porch and garage lights. I run them dusk to dawn and get around 3 years. Just put LED bulbs on the porch (on sale at Lowes for $9.98). We’ll see how long they last, but so far I’m impressed by the instant on and the amount of light they produce.