I have had a few Ott lights and also some of the lesser known brands similar all spectrum lights and I love them all. However, two of the Ott-light fixtures we have bought have broken and it' appears to be the ballast, at least we think. The bulbs are great but I'm not so sure about the quality of the (very expensive) fixtures. I really can't tell the difference between Ott light bulbs and the others. I got two floor gooseneck lamps from first street I think (was in a magazine ad) and they are really great. Such a difference from regular bulbs!