Big Kahunas are imo better than most if not the best reflector on the market especially considering HTG's package prices for ballast, bulb, and socket. You can adjust the socket placement up, down, forward, and back in the hood. The larger size does help keep temps lower and big kahunas can be vented chimney style or straight through. I'm not going to claim 2 a light I'm not that good yet but 1 per light is a no brainer with these hoods. They are very heavy and need to be hung securely but lay perfectly flat because of the weight instead of twisting like smaller lighter reflectors. Everything is from my personal experience so take it for what it's worth. They actually make a 3x3' reflector the Big Daddy but I personally think a square is not the best way to reflect a long thin cylindrical bulb.