Since we are on this subject, I was wondering if you have ever used these types of bulbs and noticed the significant savings that they promise? We have not had any luck with them at all. We have purchased several different brands from different stores. None of them have even come close to lasting as long as they are supposed to and we didn't notice any difference in our utility bill. I would love to see the savings that they promise and I like to do my part to be responsible when it comes to being environmentally friendly. What are we doing wrong?