I've used 'energy saving' bulbs for years, bought some of them, and they aren't that expensive, not as expensive as they were when they first came out, I can't afford to spend much,and others I've got free from the electric company and the C A B (Citizens Advice Bureau)
I prefer them to ordinary bulbs especially when I get up in the middle of the nite cos they are less painful on the eyes. I use an ES bulb in the kitchen but leave it on all the time cos they take a while to get to full glow. Only place I don't have E S bulbs are the bathroom and toilet, not in there long enough to worry about wasted energy.
I've never noticed any of the E S bulbs flicker until the new one I put in one of the bedrooms, that flickers when I first switch it on, not sure why tho.
If the ordinary bulbs aren't going to be manufactured anymore that will mean a load of folk will have to change their lighting system cos ES bulbs aren't compatable with DIMMER switches.
I'm surprised about the migraine claim.