I'm a fan of LEDs too Grab. I made myself a white LED headlamp about five years ago, using the housing from an incandescent headlamp that I picked up in a thrift store. We also use LED lights to illuminate the countertops in the kitchen as a backup during power outages.

They have really come down in price in the past couple of years and a 5 LED puck light with batteries can now be purchased in Canada for under $5.00, but the white LED bulbs that can be retrofitted into incandescent circuits are still way too pricey to make any economic sense and they are still better suited to task lighting because they are so directional. If the price comes down, the first place I'd consider using them would be in the halogen track lighting in the office here. The halogens really pump out the heat in the summer.

I'm prone to migraines, but but like Bee, I have not found that the CF bulbs have caused me any problems. I rather like the light they produce. A far cry from the old overhead flickering flourescent lighting of bygone years. The light from the computer monitor probably bothers me more than CFs do.

What I do note though is that the compact CFs are less useful in situations where you only need the light briefly, such as storage rooms. They take a few minutes to come up to full brightness, by which time I've turned it off again. So I'll keep the incandescents in those situations until I'm no longer allowed to purchase and use them. Also the mini CFs won't fit into the overhead fixtures in our kitchen either, so when they ban incandescents here, we're going to have to spring for new fixtures and all the energy saving that that will entail.

Because we use electric heat, I'm not convinced CFs save us any money, particularly in the winter. Whether the heat for a room is coming from an incandescent bulb or a baseboard heater, makes no difference, its all cumulative. I probably could save more in power consumption by unplugging the cell phone charger and other charging devices, when not in use or turning off the computers at night.