[DawnFalcon]

In the past I've used full spectrum incandescent bulbs, they have been seriously useful in stablising my sleep cycle. This house only has halogen lights, however, which are not only shorter lived and more expensive than even full spectrum incandescent bulbs, their light tends to give me headaches and the expensive LED bulbs are so dim as to be effectively useless. I've ended up getting a desk lamp and having full spectrum bulbs for it shipped from Asia, and it's still not ideal.

Hopefully the next place I live will have normal light fittings, but I'm not looking foward to having to buy the expensive full spectrum CFL's, which in my experience die just as quickly, if not more quickly, as normal incandescents. And the level of light they provide is an issue, too many houses using CFL's are badly lit... (Supposedly the 20W ones provide as much light as a 100W bulb, a photometer* quickly shows that's a bad joke - a 30W one is still less powerful)

(*Do they think people can't easily check? It's not like making a photometer is remotely hard)