Readers who asked about this were especially interested in a three-way LED bulb that goes up to 150 watts (50/100/150) because they need the brighter light for reading.

Sylvania sells a similar LED bulb at Lowe's, also for $40. However, LED prices are coming down quickly. The DoE expects a 60-watt equivalent LED bulb to cost $10 by 2015, putting them within ...

The easiest way to figure out what bulb you need is by using an incandescent/LED conversion cart. Say you normally use a 60-watt incandescent bulb, for example.