Just setup 4 Radions about 2 weeks ago. I must say I am pleasantly surprised. Coverage is excellent - 4 easily light my 8' x 2' system. I have been a diehard MH user forever and I am not a big fan of overly blue tanks. Though LEDs still have an odd aesthetic quality them to my eyes, I find the 12K and 14K presets pretty good. So far the corals have responded well and I am getting more used to the appearance of the lights.