HDR lamp comparision

Look at an HDR lamp comparison. It is round versus square one. Steven Gibbs says that the round HDR lamp last 8000 hours versus only 2000 hours for a square one. That is four times more. Well, I do like the round one. However, it is bigger and harder to install by Steven Gibbs than the old one. Still, it is well worth the extra effort or so we may say.