as far as lights go, i take the word "equivalent" as another way of saying " bullshit". i dont fuck with LED so i dont know much about them but when i see the word equivalent i immediately toss it aside. i take it its the same as CFLs. you can get 150w CFLs at any walmart but theyre "equivalent" which means youre not getting 150 youre probably getting like 80 or 90w.... i could be wrong on the watts there but i know for a fact youre not getting the full 150. as far as LEDs go, i dont know if they run the same but i know HPS is REAL DEAL. im running a 400w HPS, i used to use T5 32w(x2) fixture with 4 bulbs and it was nothing compared to the HPS. HPS over anything... thats what i say but everyone is different. ive seen good work with LEDs, theres a section made just for them on here, check it out.