I have been debating over LEDs and specs, it's all to much to choose from, so I just bit the bullet and got a light that is 640w 8 bars Samsung's 301B, 301H , Osram , all the usual, it's was listed at £500 knocked it down to £450, it's a Chinese made but I don't care if it covers a 6 X 6 veg and 5x5 flower I will see if I can get the specs to see if it helps you, I will be testing it in the next few days,