Ah, but I don't really care about efficiency that much when it comes to light bulbs. I could turn on a hundred watt bulb today, leave it on 24/7, and probably not see any noticeable difference in my electric bill.That would cost me about 11% per year in electrical costs. I'd hope I'd notice that, all else being equal.It seems to be that the only devices and appliances in my house for which efficiency is an essential consideration are those that make things hot (ovens, clothes dryers, space heaters, etc.) and those that make things cold (freezers, refrigerators, air conditioners). Feel free to correct me if I'm wrong. Cable TV boxes use more energy over a year than a fridge does, because the cable TV box draws 35-40 watts 24/7. There has been some discussion about making them more energy effiecent, but because consumers are stuck using the box our provider gives us, its tough for us vote with our wallets. Compare that to Apple TV or Roku boxes, with use less than 5watts when active, and even less when idle. I'm sure that both Apple and Roku take energy into consideration when designing their devices, since people have many options for streaming media boxes, unlike cable boxes.