It's important to note that these are just my results and I haven't seen anyone else (yet) hit my numbers. That's not to say people aren't, I just haven't seen it cause I'm not looking. Most people I do see are getting 2-2 1/2 lbs per light I'm guessing, and they seem happy with that considering the wattage being used. I've said it before, this is all about the proper canopy management, as the wide light spred of the fixture takes care of itself. If you can't figure out how to get the proper canopy, your final numbers will suffer.