I have been using OTT lights for years but may try another light now. I have seven lights throughout the sewing room and house, and four of them are down due to faulty ballasts/plugs. OTT liite knows this is a problem and allows you to BUY more parts, and they require a phone call to determine the part needed. Why not just build the quality in? I have not decided whether to replace ballasts for the third time or just buy another brand of light. I do like the full spectrum light.