I already had one, a Phytosun also but the white model (given in emergency to a patient that help out for various reasons) and although white is better it dissipates better, the play of light is more pleasant and sutrout, it offers programming for every 10 minutes that do not do this one black for greater capacity but in the end it does not change, and the oval shape is a disadvantage compared to white and its perfect round shape to dissipate more white is a bit cheaper I personally recommend the white (and expected better of it) otherwise impeccable and reliable seller shipping