I have two of the Happy Light "Lucent" and they come in handy during the gray days in the Pacific Northwest. I showed the Verilux website to a friend with SAD and she and I both bought the Happy Light Lumi.
                    The "Lumi" is taller and I like the options to have 5000 or 7000 or 10000 lux. I also notice the "on/off" button is easier to use.. the Lucent seems stiff and you have to hit just the right spot. I shared my Lucent with a friend who works in an office and she plans to buy her own!.