The PowerboxT FLIPBOXT is the BEST FLIPBOXT on the market and has many advantages over other flip boxes. First, it REALLY WORKS and has a 5-year warranty. Second, we make our FLIPBOXEST in individual modules so you get extended distance for placing your lights; all of your cords are not tied to a single panel. Third, in the event of a component failure, you can quickly swap-out one module and you are back at full capacity. With large, multi-ballast panels, if there is a component failure, you have to take the entire panel system down while you arrange a replacement.