I've upgraded to a 36 LED Warm White 110V bulb I bought on eBay for $10.
This bulb works wonderfully to read in bed with the iLiad/Sony Reader.
It is absolutely quiet, no switching power supply noise like with CFL bulbs or humming tungsten filaments like you get with some incandescent bulbs.
Instant on/off unlike with CFL bulbs. And the roughly 2700K light is very warm and gentle to the eyes, very close to the color of a nice incandescent reading bulb.
It produces about 25W of incandescent light from 2.5W of electricity so you can feel really green when using it.
Rated life: 100,000 hours.
LED's, they aren't just for battery powered clip on reading lights anymore!
