My attempt at 'living green' led me to replace all the light bulbs in my house with the flourescent ones. My electric billed dropped by a third! The only problem I had with them, is the one over my sewing machine was too dim, to see well with, so it is back to a regular 75 watt bulb in that one. I only make 'green choices' that make sense to me. I don't believe the hype. Do your research. It pays in the end. Call your local electric company and ask them what they see as worth the expense. Talk to people in Home centers, they will share experience, good or bad. Most people like to be asked for their expertise.