Just ordered the 357 Magnum LED and plan on using it in conjunction with my existing HID setup. Right now im flowering under two 600 HPS with a third MH 600 in the middle. Im replacing the MH with the LED for better temperature control and reduced energy costs and concerns. Im growing 30 Somango and Heavy Duty Fruity in Soma Grow Beds with an all organic feeding program. I did my research and the 357 is comparably the best LED i could find for the price. Anyone have any real experience with this that they would like to share?