Lighting on Deals

As I am constantly visiting some of the on-line deals sight I am frequently seeing lately some of high power led lamps being sold with greater discount. Now I am becoming really very curious about the thing as most of them are saying that it helps save energy consumption. LED is becoming really more popular nowadays even in television or in projector screen. I am thinking now of changing all the lights in my house. I just would like to learn more about before doing so. If my renovation plan would continue this year then all the lighting will be replaced as well.