I've been reading up on these too. They are able to target more of the proper light frequency to plant growth where as a hps uses a lot of wasted light. I don't think its there yet but they are looking promising for the future.
killerweed420 Reviewed by killerweed420 on . LED Red and Blue Spectrum lighting hidhut.com is promoting these new LED lights that are supposed to be far superior to HPS and MH, yet they only use 90 watts. THey have red spectrum for flowering and blue spectrum for veg. Does anyone own these yet or seen them in action? Rating: 5